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1.
Heat capacity study
of relaxors BaTi0.65Zr0.35O3 and BaTi0.60Zr0.40O3 / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2006. -
Vol. 18
,
Is. 17
. - P. 4407-4416,
DOI
10.1088/0953-8984/18/17/026. - Cited References: 21 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
CERAMICS
BA(TI1-XZRX)O-3
BATIO3
Кл.слова (ненормированные):
Calorimetry
--
Composition
--
Data reduction
--
Lead compounds
--
Mathematical models
--
Permittivity
--
Specific heat
--
Adiabatic calorimetry
--
Burns temperature
--
Diffuse anomalies
--
Barium compounds
Аннотация:
The heat capacity of two relaxors BaTi(1-x)ZrxO(3) (x = 0.35, 0.40) was measured using adiabatic calorimetry in the temperature range 100-360 K. The Cp(T) dependence of both compositions is characterized by the presence of two diffuse anomalies near the Burns temperature T-d and the temperature of the maximum in permittivity T-m in the temperature ranges 250-350 K and 120 200 K. The anomalous heat capacity near T-d was analysed taking into account the distribution of Zr concentration in nanoregions leading to the distribution of their transition temperatures into the polar phase. Excess heat capacity near Tm was discussed in the framework of the spherical random bond-random field model. The results are compared with the data obtained by the same procedures for PbMg1/3Nb2/3O3 studied experimentally earlier.
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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
L V Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
CEMES-CNRS, 31055 Toulouse, France
Доп.точки доступа:
Gorev, M.; Bondarev, V.; Sciau, P.; Savariault, J. M.
}
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2.
Heat capacity and
thermal expansion study of relaxor-ferroelectric Ba0.92Ca0.08Ti0.76Zr0.24O3 / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2004. -
Vol. 16
,
Is. 39
. - P. 7143-7150,
DOI
10.1088/0953-8984/16/39/045. - Cited References: 18 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
CERAMICS
BA(TI1-XZRX)O-3
PEROVSKITES
Кл.слова (ненормированные):
Calorimetry
--
Dielectric properties
--
Ferroelectric materials
--
Perovskite
--
Phase transitions
--
Solid solutions
--
Specific heat
--
Thermal expansion
--
Adiabatic calorimetry
--
Frequency dispersion
--
Polar domains
--
Relaxor ferroelectrics
--
Barium compounds
Аннотация:
Heat capacity and thermal expansion of the Ba0.92Ca0.08Ti0.76Zr0.24O3 compound is measured using the methods of adiabatic calorimetry and optic-mechanical dilatometry in the temperature range 100-370 K. Three blurred anomalies on the C-p(T) and alpha(T) dependencies are observed in the temperature range 200-360 K. The results of the studies are discussed together with data on the structure and dielectric properties in the framework of spherical random bond-random field model.
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Держатели документа:
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
L V kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Sciau, P.; Savariault, J. M.
}
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3.
Zamkova, N. G.
Effect of cation substitution on the lattice dynamics and ferroelectric instability of cubic BaTiO3 and BaZrO3 doped with Bi and La ions / N. G. Zamkova, V. I. Zinenko> // Phys. Solid State. - 2009. -
Vol. 51
,
Is. 5
. - P. 973-981,
DOI
10.1134/S1063783409050151. - Cited References: 11. - This work was supported by the Russian Foundation for Basic Research, project no. 07-02-00069. . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
CERAMICS
Аннотация:
The spectra of lattice vibration frequencies of solid solutions Ba1 - x Bi(2x/3)a-- Ti-x/3(Zr)O-3 and Ba1 - x La (x) Ti(Zr)(1 - x/4)a-- O-x/4(3) are calculated in terms of a generalized Gordon-Kim model with inclusion of the dipole and quadrupole polarizabilities. Over the entire concentration range, the calculated phonon spectra contain a ferroelectric soft mode. The effect of various interactions on the ferroelectric instability of these solid solutions is studied. It is shown that the character of ferroelectric instability is largely determined by the mechanism of charge compensation.
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Держатели документа:
[Zamkova, N. G.
Zinenko, V. I.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Замкова, Наталья Геннадьевна; Russian Foundation for Basic Research [07-02-00069]
}
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4.
Thermal expansion, polarization
and phase diagrams of Ba1-yBi2y/3Ti1-xZrxO3 and Ba1-yLayTi1-y/4O3 compounds / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2009. -
Vol. 21
,
Is. 7
. - Ст. 75902. - P.,
DOI
10.1088/0953-8984/21/7/075902. - Cited References: 28. - This work was supported by the Russian Foundation for Basic Research ( project no. 07-02-00069) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools ( project no. NSh-1011.2008.2). . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
HEAT-CAPACITY
CERAMICS
BA(TI1-XZRX)O-3
FERROELECTRICS
BEHAVIOR
BATIO3
BATI0.65ZR0.35O3
CONDUCTIVITY
PEROVSKITES
CHEMISTRY
Кл.слова (ненормированные):
Barium
--
Dielectric properties
--
Lanthanum
--
Phase diagrams
--
Polarization
--
Thermal stress
--
Zirconium
--
Ceramic compositions
--
Root mean squares
--
Temperature ranges
--
Temperature-dependent measurements
--
Thermal expansion co-efficient
--
Thermal-expansion properties
--
Thermal expansion
Аннотация:
The thermal expansion properties of the ceramic compositions Ba1-yLayTi1-y/4O3 (y = 0.0, 0.026, 0.036, 0.054) and Ba1-yBi2y/3Ti1-xZrxO3 (y = 0.10; x = 0.0, 0.04, 0.05, 0.10, 0.15) were determined in the temperature range 120-700 K. We report the temperature- dependent measurements of the strain, thermal expansion coefficient and the magnitude of root mean square polarization. The results obtained are discussed together with the data on the structure and dielectric properties.
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Держатели документа:
[Gorev, Michail
Bondarev, Vitaly
Flerov, Igor] Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, Michail
Bondarev, Vitaly
Flerov, Igor] Siberian Fed Univ, Inst Engn Phys, Krasnoyarsk 660041, Russia
[Maglione, Mario
Simon, Annie] Univ Bordeaux 1, ICMCB CNRS, F-33608 Pessac, France
[Sciau, Philippe] Univ Toulouse, CEMES CNRS, F-31055 Toulouse, France
[Boulos, Madona
Guillemet-Fritsch, Sophie] Univ Toulouse, CIRIMAT CNRS UPS INPT, F-31062 Toulouse, France
ИФ СО РАН
L v Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics, Siberian Federal University, av. Svobodny 79, Krasnoyarsk, 660041, Russian Federation
ICMCB-CNRS, Universite de Bordeaux i, 87 avenue A Schweitzer, 33608 Pessac, France
CEMES-CNRS, Universite de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
CIRIMAT CNRS/UPS/INPT, Universite de Toulouse, Batiment 2R1, 118 route de Narbonne, 31062 Toulouse, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Maglione, M.; Simon, A.; Sciau, P.; Boulos, M.; Guillemet-Fritsch, S.; Russian Foundation for Basic Research [07-02-00069]; Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools [NSh-1011.2008.2]
}
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5.
Thermal expansion of
(Ba1-x La (x) )Ti1-x/4O3 solid solutions / M. V. Gorev [et al.]> // Phys. Solid State. - 2009. -
Vol. 51
,
Is. 4
. - P. 790-796,
DOI
10.1134/S106378340904026X. - Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project no. 07-02-00069) and the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools of the Russian Federation (grant NSh-1011.2008.2). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
CERAMICS
BATIO3
BA(TI1-XZRX)O-3
FERROELECTRICS
CONDUCTIVITY
BEHAVIOR
SYSTEM
PHASE
HEAT
Аннотация:
Deformation and the thermal expansion coefficient of ceramic samples of (Ba1 - x La (x) )Ti1 - x/4O3 solid solutions (x = 0, 0.026, 0.036, 0.054) were studied in the temperature range 120-700 K. Based on an analysis of the data obtained, the temperature-composition phase diagram is refined, and the temperature dependence of the polarization is calculated. The results are discussed in combination with the dielectric measurement data.
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Держатели документа:
[Gorev, M. V.
Flerov, I. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, M. V.
Flerov, I. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Sciau, Ph.] Univ Toulouse, CNRS, CEMES, Toulouse, France
[Guillemet-Fritsch, S.] Univ Toulouse, CNRS, INPT, CIRIMAT,UPS, Toulouse, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk 660041, Russian Federation
CEMES-CNRS, Universite de Toulouse, Toulouse, France
CIRIMAT CNRS/UPS/INPT, Universite de Toulouse, Toulouse, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Sciau, P.; Guillemet-Fritsch, S.; Russian Foundation for Basic Research [07-02-00069]; Russian Federation [NSh-1011.2008.2]
}
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6.
Heat capacity study
of double perovskite-like compounds BaTi1-xZrxO3 / M. V. Gorev [et al.]> // Phys. Solid State. - 2005. -
Vol. 47
,
Is. 12
. - P. 2304-2308,
DOI
10.1134/1.2142895. - Cited References: 19 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
BATIO3
BA(TI1-XZRX)O-3
FERROELECTRICS
CERAMICS
STATE
FILMS
FIELD
Аннотация:
The temperature dependence of the heat capacity of two compositions in the solid solution system BaTi1 - xZrxO3 (x = 0.25, 0.35) was measured using adiabatic calorimetry. In the T-x phase diagram, these compounds occupy positions near the crossover from conventional ferroelectric behavior to the relaxor state. Both compounds reveal diffuse heat capacity anomalies: two anomalies in the temperature ranges 250-350 and 150-200 K at x = 0.35 and one anomaly within the range similar to 150-320 K at x = 0.25. The results obtained are discussed together with structural and dielectric measurements. (c) 2005 Pleiades Publishing, Inc.
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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
CEMES-CNRS, 29 rue Jeanne Marvig, Toulouse, 31055, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Sciau, P.; Savariault, J. M.
}
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7.
Synthesis and luminescence
properties of Li2O–Y2O3–TeO2:Eu3+ tellurite glass / V. V. Atuchin [et al.]> // Mater. Chem. Phys. - 2014. -
Vol. 147
,
Is. 3
. - P. 1191-1194,
DOI
10.1016/j.matchemphys.2014.07.003. - Cited References: 26. - This study is partly supported by the Ministry of Education and Science of the Russian Federation. . - ISSN 0254-0584. - ISSN 1879-3312
РУБ
Materials Science, Multidisciplinary
Рубрики:
LIGHT-EMITTING-DIODES
SPECTROSCOPIC PROPERTIES
OPTICAL-PROPERTIES
ENERGY-TRANSFER
CERAMICS
Eu3+
PHOTOLUMINESCENCE
TEMPERATURE
EMISSION
PHOSPHOR
Кл.слова (ненормированные):
Glasses
--
Heat treatment
--
Photoluminescence spectroscopy
--
Optical properties
Аннотация:
The Eu3+-doped red-orange emitting phosphor of tellurite glass 0.25Li2O–0.20Y2O3–0.5TeO2–0.05Eu2O3 has been synthesized by the melt quenching method. The amorphous nature of the glass has been verified by XRD measurements. The photoluminescence excitation and emission spectra, the luminescence decay curves have been investigated for the composition. The phosphor can be efficiently excited by the near UV light to realize the intense narrow red emission line (611 nm) corresponding to forced electric dipole transition 5D0 → 7F2 of Eu3+ ions. The Li2O–Y2O3–TeO2:Eu3+glass phosphor is a potential red-orange emitting candidate for the application in WLEDs.
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Держатели документа:
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia
SB RAS, Inst Geol & Mineral, Lab High Pressure Minerals & Diamond Deposits, Novosibirsk 630090, Russia
Novosibirsk State Univ, Dept Appl Phys, Novosibirsk 630090, Russia
SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Atuchin, V. V.; Yelisseyev, A. P.; Galashov, E. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ministry of Education and Science of the Russian Federation
}
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8.
Magnetic nanoparticles formed
in glasses co-doped with iron and larger radius elements / I. S. Edelman [et al.]> // J. Appl. Phys. - 2012. -
Vol. 112
,
Is. 8
. - Ст. 84331. - P. ,
DOI
10.1063/1.4759244. - Cited References: 65. - This work was partly supported by the Russian Foundation for Basic Research, Grant Nos. 07-02-92174 RFBR-CNRS and 11-02-00972, and President of Russia Federation Grant No NSh 1044.2012.2. A. Artemenko acknowledges financial support from the Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme (EPREXINA, GA 255662). The synchrotron measurements were supported via the Russian federal Contract No. 16.552.11.7003. The authors thank K. P. Polyakova for the preparation of thin films. . - ISSN 0021-8979
РУБ
Physics, Applied
Рубрики:
SUPERPARAMAGNETIC RESONANCE
FERROMAGNETIC-RESONANCE
TEMPERATURE-DEPENDENCE
FERRITE NANOPARTICLES
OXIDE NANOPARTICLES
FARADAY-ROTATION
CERAMICS
ANISOTROPY
PARTICLES
SPECTRA
Аннотация:
A new type of nanoparticle-containing glasses based on borate glasses co-doped with low contents of iron and larger radius elements, Dy, Tb, Gd, Ho, Er, Y, and Bi, is studied. Heat treatment of these glasses results in formation of magnetic nanoparticles, radically changing their physical properties. Transmission electron microscopy and synchrotron radiation-based techniques: x-ray diffraction, extended x-ray absorption fine structure, x-ray absorption near-edge structure, and small-angle x-ray scattering, show a broad distribution of nanoparticle sizes with characteristics depending on the treatment regime; a crystalline structure of these nanoparticles is detected in heat treated samples. Magnetic circular dichroism (MCD) studies of samples subjected to heat treatment as well as of maghemite, magnetite, and iron garnet allow to unambiguously assign the nanoparticle structure to maghemite, independently of co-dopant nature and of heat treatment regime used. Different features observed in the MCD spectra are related to different electron transitions in Fe3+ ions gathered in the nanoparticles. The static magnetization in heat treated samples has non-linear dependence on the magnetizing field with hysteresis. Zero-field cooled magnetization curves show that at higher temperatures the nanoparticles occur in superparamagnetic state with blocking temperatures above 100 K. Below ca. 20 K, a considerable contribution to both zero field-cooled and field-cooled magnetizations occurs from diluted paramagnetic ions. Variable-temperature electron magnetic resonance (EMR) studies unambiguously show that in as-prepared glasses paramagnetic ions are in diluted state and confirm the formation of magnetic nanoparticles already at earlier stages of heat treatment. Computer simulations of the EMR spectra corroborate the broad distribution of nanoparticle sizes found by "direct" techniques as well as superparamagnetic nanoparticle behaviour demonstrated in the magnetization studies. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759244]
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Держатели документа:
[Edelman, I.
Ivanova, O.
Ivantsov, R.
Velikanov, D.
Zabluda, V.] LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
[Zubavichus, Y.
Veligzhanin, A.] NRC Kurchatov Inst, Moscow 123182, Russia
[Zaikovskiy, V.] Siberian Branch RAS, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[Stepanov, S.] SI Vavilov State Opt Inst, St Petersburg, Russia
[Artemenko, A.] CNRS, ICMCB, UPR 9048, F-33608 Pessac, France
[Curely, J.
Kliava, J.] Univ Bordeaux 1, CNRS, UMR 5798, LOMA, F-33405 Talence, France
Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zabluda, V. N.; Заблуда, Владимир Николаевич; Zubavichus, Y.; Veligzhanin, A. A.; Zaikovskiy, V. I.; Stepanov, S.; Artemenko, A.; Curely, J.; Kliava, J.
}
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9.
Caloric and multicaloric
effects in oxygen ferroics and multiferroics / I. N. Flerov [et al.]> // Phys. Solid State. - 2015. -
Vol. 57
,
Is. 3
. - P. 429-441,
DOI
10.1134/S1063783415030075. - Cited References:53. - This study was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-924.2014.2). . - ISSN 1063. - ISSN 1090-6460. -
РУБ
Physics, Condensed Matter
Рубрики:
PHASE-TRANSITIONS
MAGNETOCALORIC MATERIALS
ELECTROCALORIC MATERIALS
REFRIGERATION
CERAMICS
OXYFLUORIDES
Аннотация:
The main problems of the current state-of-the-art research into the caloric effects observed in oxygen ferroics, multiferroics, and composites, as well as the influence of different factors (anisotropy, dimensional parameters, direct and indirect interferroic interactions) on these effects, have been considered. Possible ways to increase the caloric efficiency of materials have been analyzed.
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Публикация на русском языке
Калорические и мультикалорические эффекты в кислородных ферроиках и мультиферроиках [Текст] / И. Н. Флёров [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2015. - Т. 57 Вып. 3. - С. 421-431
Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Gorev, M. V.; Горев, Михаил Васильевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Всероссийская конференция по физике сегнетоэлектриков(20 ; 2014 ; 18-22 авг. ; Красноярск)
}
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10.
Thermal expansion and
permittivity of (Ba1-xBi2x/3)TiO3 solid solutions / M. V. Gorev [et al.]> // Phys. Solid State. - 2011. -
Vol. 53
,
Is. 10
. - P. 2073-2079,
DOI
10.1134/S1063783411100143. - Cited References: 24. - This study was supported by the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools (grant NSh-4645.2010.2). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
BARIUM-TITANATE
CERAMICS
BATIO3
BEHAVIOR
PHASE
FERROELECTRICS
Аннотация:
The strain, the thermal expansion coefficient, and the permittivity of ceramic samples of (Ba1 - x Bi-2x/3)TiO3 solid solutions with x = 0, 0.01, 0.03, and 0.05 have been studied in the temperature range 120-700 K. Based on an analysis of the results, the temperature-composition phase diagram has been refined, and the temperature dependence of the polarization has been calculated.
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Держатели документа:
[Gorev, M. V.
Flerov, I. N.
Bondarev, V. S.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Gorev, M. V.
Bondarev, V. S.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Maglione, M.
Simon, A.] Univ Bordeaux 1, ICMCB CNRS, Pessac, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Science, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk 660041, Russian Federation
ICMCB-CNRS, Universite de Bordeaux 1, Pessac, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Maglione, M.; Simon, A.
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11.
Identification of ε-Fe2O3
nano-phase in borate glasses doped with Fe and Gd / O. S. Ivanova [et al.]> // J. Magn. Magn. Mater. - 2016. -
Vol. 401
. - P. 880-889,
DOI
10.1016/j.jmmm.2015.10.126. - Cited References: 40. - This work was supported partly by the Russian Foundation for Basic Research, Grants No 14-02-01211-a and by the President of Russia Grant No. NSh-2886.2014.2. Authors are grateful to G.A. Bukhtiyarova and U.N. Martyanov for the assistance in the ε-Fe2O3 nanoparticles prepared by a wet chemical pore filling impregnation method and for the discussion of the obtained results . - ISSN 0304-8853
РУБ
Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
IRON-OXIDE
NANOPARTICLES
CERAMICS
CRYSTAL
PARTICLES
SURFACE
Кл.слова (ненормированные):
Magnetic nanoparticles
--
ε-Fe2O3
--
Magnetic circular dichroism
--
Electron magnetic resonance
Аннотация:
A new type of magnetic nanoparticles was revealed in borate glasses co-doped with low contents of iron and gadolinium. Structure and magnetic properties of the particles differ essentially from that of the α-Fe2O3, γ-Fe2O3, or Fe3O4 nanoparticles which were detected earlier in similar glass matrices. Transmission electron microscopy including STEM-HAADF and EDX, synchrotron radiation-based XRD, static magnetic measurements, magnetic circular dichroism, and electron magnetic resonance studies allow referring the nanoparticles to the iron oxide phase-ε-Fe2O3. Analysis of the data set has shown that it is Gd atoms that govern the process of nanoparticles' nucleation and its incorporation into the particles in different proportions can be used to adjust their magnetic and magneto-optical characteristics. © 2015 Elsevier B.V.
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Держатели документа:
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
NRC Kurchatov Institute, Moscow, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch of RAS, Novosibirsk, Russian Federation
Novosibirsk State University, Novosibirsk, Russian Federation
Vavilov State Optical Institute, All-Russia Research Center, Petersburg, Russian Federation
Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zubavichus, Y. V.; Zaikovskii, V .I.; Stepanov, S. A.
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