Structural and magnetic transitions in the Bi2Fe4O9/BiFeO3 composite

被引：2
|
作者：
Udod, L. V. [1 ,2 ,4 ]
Aplesnin, S. S. [1 ,2 ]
Sitnikov, M. N. [2 ]
Eremin, E. V. [1 ,2 ,3 ]
Molokeev, M. S. [1 ,3 ]
Shabanov, A. V. [1 ]
Romanova, O. B. [1 ]
Kharkov, A. M. [2 ]
机构：
[1] Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[2] Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia
[3] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[4] Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 958卷
关键词：
Composite materials; Magentisation; Optical properties; Scanning electron microscopy (SEM); Ultrasonics; Phase transitions; BIFEO3; MOSSBAUER; CRYSTAL; NANO;
D O I：
10.1016/j.jallcom.2023.170445
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A Bi2Fe4O9/BiFeO3 composite with a percentage ratio of 67/33 has been synthesized, its morphological analysis has been carried out. The average crystallite sizes for each phase have been determined. The magnetization hysteresis has been established and the temperature of its disappearance has been found. Using the infrared absorption spectra, temperatures of the magnetic phase transitions in each phase have been determined from the magnetic susceptibility, magnetostriction constant, ultrasound damping coef-ficient, and phonon mode softening. The change of magnetostriction constant sign observed in the vicinity of the spin reorientation transition and antiferromagnetic transition in mullite has been attributed to the change of the sign of the magnetoelastic constants. The interaction between the phases in the composite and the correlation of its structural and magnetic properties have been established. (c) 2023 Elsevier B.V. All rights reserved.
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页数：9
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