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Investigation of the ferroelastic phase transition in the SrMgF4 pyroelectric crystal / S. V. Mel'nikova [et al.] // Phys. Solid State. - 2014. - Vol. 56, Is. 4. - P. 757-760, DOI 10.1134/S1063783414040192. - Cited References: 8. - This study was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (project no. NSh-4828.2012.2) and the Siberian Branch of the Russian Academy of Sciences within the Interdisciplinary Integration Project of Basic Research no. 28. . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
BaMnF4
Аннотация: A SrMgF4 compound has been synthesized and a high optical-quality crystal has been grown. Optical-polarization observations, X-ray diffraction analysis, and the measurement of the birefringence Delta n (i) (t) in the SrMgF4 crystal have been carried out in the temperature range of 90-1200 K. A second-order improper ferroelastic phase transition accompanied by birefringence anomalies and the symmetry change P112(1) (Z = 12) a dagger" Cmc2(1) (Z = 4) has been discovered at T (0) = 478 +/- 1 K. The crystal remains pyroelectric in both phases. Considerable contributions of the fluctuations of the order parameter have been observed in the temperature ranges of (T (0) - T) 15 K and (T - T (0)) 60 K.

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Публикация на русском языке Исследование сегнетоэластического фазового перехода в пироэлектрике SrMgF4 [Текст] / С. В. Мельникова [и др.] // Физ. тверд. тела. - 2014. - Т. 56 Вып. 4. - С. 727-730

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia

Доп.точки доступа:
Mel'nikova, S. V.; Мельникова, Светлана Владимировна; Isaenko, L. I.; Goloshumova, A. A.; Lobanov, S. I.; Council on Grants from the Russian Federation for Support of Leading Scientific Schools [NSh-4828.2012.2]; Siberian Branch of the Russian Academy of Sciences within the Interdisciplinary Integration Project of Basic Research [28]
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Magnetic, structural, and dielectric properties of CuB(2)O(4) / G. . Nenert [et al.] // Phys. Rev. B. - 2007. - Vol. 76, Is. 14. - Ст. 144401, DOI 10.1103/PhysRevB.76.144401. - Cited References: 30 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
WEAK FERROMAGNETISM
   COPPER METABORATE
   MAGNETOELECTRIC PHENOMENA
   BAMNF4
   CR2O3
   ANTIFERROMAGNETICS
   CONSTANT
Аннотация: We have studied the magnetic, structural, and dielectric properties of a single crystal of CuB(2)O(4). We show that both reported magnetic transitions are observable in the magnetization, irrespective of the measured direction of the crystal. This is in agreement with recent neutron data. More importantly, our study demonstrates the absence of dielectric anomalies at the various magnetic transitions despite the reported magnetoelectric symmetry. This demonstrates that the polarization remains zero at any temperature. Consequently, we interpret our data as the evidence for a very weak or the absence of linear magnetoelectric coupling in this material.

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Держатели документа:
[Nenert, G.
Palstra, T. T. M.] Univ Groningen, Zernike Inst Adv Mat, Solid State Chem Lab, NL-9747 AG Groningen, Netherlands
[Bezmaternykh, L. N.] LV Kirenskii Inst Phys, Siberian Branch RAS, Krasnoyarsk 660036, Russia
[Vasiliev, A. N.] Moscow MV Lomonosov State Univ, Loe Temp Phys Dept, Moscow 119991, Russia
ИФ СО РАН
Solid State Chemistry Laboratory, Zernike Institute for Advanced Materials, University of Groningen, Nijenborg 4, 9747 AG Groningen, Netherlands
L. V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation
Low Temperature Physics Department, Moscow State University, Moscow 119991, Russian Federation
CEA-Grenoble DRFMC/SPSMS/MDN, 17 rue des Martyrs, 38054 Grenoble Cedex, France

Доп.точки доступа:
Nenert, G.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Vasiliev, A. N.; Palstra, TTM
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