CoFe2O4和0.3CoFe2O4-0.7PbTiO3复合材料的比热

IF 0.9 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Physics of the Solid State Pub Date : 2023-03-02 DOI:10.1134/S1063783422110075

R. G. Mitarov, S. N. Kallaev, Z. M. Omarov, K. G. Abdulvakhidov

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引用次数: 0

摘要

研究了CoFe2O4铁磁体和0.3CoFe2O4-0.7PbTiO3复合材料比热在150 ~ 820 K温度范围内的温度依赖性。钛酸铅铁电体在钴铁氧体铁磁体中加入后，磁性相变温度向较低温度移动了49 K，在较宽的温度范围内比热降低。值得注意的是，比热的额外成分是由于钴离子或铁离子向更高能级的转变，以及由于三个共存相的形成而导致的晶格参数的畸变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Specific Heat of CoFe2O4 and the 0.3CoFe2O4–0.7PbTiO3 Composite

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Specific Heat of CoFe2O4 and the 0.3CoFe2O4–0.7PbTiO3 Composite

The temperature dependence of the specific heat of the CoFe₂O₄ ferromagnet and the 0.3CoFe₂O₄–0.7PbTiO₃ muliferroic composite is studied in the temperature range 150–820 K. An addition of lead titanate ferroelectric to cobalt ferrite ferromagnet is found to lead to a shift of the magnetic phase transition temperature to lower temperatures by 49 K and to a decrease in the specific heat in a wide temperature range. It is noted that the additional component of the specific heat is due to transitions of cobalt or iron ions to higher energy levels and also due to a distortion of the lattice parameters as a result of formation of three coexisting phases.

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来源期刊

Physics of the Solid State 物理-物理：凝聚态物理

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

2-4 weeks

期刊介绍： Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.