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Investigation of structural, elastic and magnetic properties of Cu2+ ions substituted cobalt nano ferrites / A. Thakur, R. Verma, F. Wan [et al.] // J. Magn. Magn. Mater. - 2023. - Vol. 581. - Ст. 170980, DOI 10.1016/j.jmmm.2023.170980. - Cited References: 47. - This research work was supported by the National Key Research and Development Program of China (2022YFE010707). The author(s) would like to acknowledge the support provided under the DST-FIST Grant No. SR/FST/PS-I/2018/48 of Govt. of India. PT is thankful to DST-SERB TARE fellowship vide Sanction Order No TAR/2022/000414 . - ISSN 0304-8853. - ISSN 1873-4766
Кл.слова (ненормированные):
Nanoferrites -- Structure -- Rietveld Refinement -- Elastic Properties -- Magnetic Porperties
Аннотация: In the present work, we synthesized the Cu-doped CoFe2O4 (Co1-xCuxFe2O4) nanoparticles with x = 0.0, 0.2, 0.4 and 0.6, by employing the citrate precursor method. The X-ray Diffraction (XRD) pattern confirmed the pure cubic structure formation with the Fd-3m space group. To know the structural purity of each sample as well as the distribution of cations, Rietveld refinement was carried out. The crystallite size increases from 39.55 nm to 41.80 nm upto x = 0.2 and with further doping of Cu2+ ions it decreases to 36.27 nm. Similar variation is observed in the lattice parameter where the value of ‘a’ first increases from 8.378 Å to 8.381 Å and then decreases to 8.377 Å. The development of a non-uniform grain is seen using scanning electron microscope (SEM), which reveals the reduction in grain size. Fourier Transform Infrared Spectroscopy (FTIR) showed the two peaks ν1 and ν2 for all the samples around 541 cm−1 and 408 cm−1, respectively, which further decreases to 532.5 cm−1 and 402.5 cm−1 as the dopant ion concentration increases. The Stiffness constant, and Elastic modulus decrease with doping whereas, the Poisson’s ratio and Pugh’s ratio show a constant value of around 0.249 and 1.660, respectively. Vibrating Sample Magnetometer (VSM) analysis shows a decrease in saturation magnetization (σs) value from 76.85 emu/g to 43.62 emu/g. The net magnetic moment (nB) decreases from 3.29 μB to 1.85 μB and the effective anisotropy constant value decreases from 10.672erg/g to 4.461erg/g. Thus, the prepared nanoparticles provide a way forward for their industrial applications.

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Держатели документа:
School of Electronics and Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
NanoLatticeX, Amity University Haryana, Gurugram, Haryana 122413, India
Nanotechnology Wing, Innovative Science Research Society, Shimla 177002, India
Centre for Nanotechnology, Amity University Haryana, Gurugram 122413, India
Department of Physics, Amity University Haryana, Gurugram 122413, India
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, 50 Akademgorodok, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Thakur, Atul; Verma, Ritesh; Wan, Fayu; Ravelo, Fayu; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Thakur, Preeti
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Co-Zn nanoferrites for high frequency applications: correlations between dielectric and magnetic properties / A. Thakur, I. S. Edelman, S. G. Ovchinnikov [et al.] // VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022) : Book of abstracts / program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 1, Sect. : Spintronics and magnetic nanostructures. - Ст. A.O5. - P. 37-38. - Cited References: 2 . - ISBN 978-5-94469-051-7

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Centre for Nanotechnology, Amity University Haryana, India
Department of Physics, Amity School of Applied Sciences, Amity University Haryana, India

Доп.точки доступа:
Ovchinnikov, S. G. \program com.\; Овчинников, Сергей Геннадьевич; Thakur, A.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ovchinnikov, S. G.; Sukhachev, A. L.; Сухачев, Александр Леонидович; Petrov, D. A.; Петров, Дмитрий Анатольевич; Thakur, P.; Российская академия наук; Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН; Казанский (Приволжский) федеральный университет; Euro-Asian Symposium "Trends in MAGnetism"(8 ; 2022 ; Aug. ; 22-26 ; Kazan); "Trends in MAGnetism", Euro-Asian Symposium(8 ; 2022 ; Aug. ; 22-26 ; Kazan)
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