aMagnetic control of spin reorientation and magnetodielectric effect below the spin compensation temperature in TmFeO3
aMagnetic control of spin reorientation and magnetodielectric effect below the spin compensation temperature in TmFeO3
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DOI：
10.1063/1.2426928
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发表时间：
2007-01
影响因子：
4
通讯作者：
R. Muralidharan;T. Jang;Chan-Ho Yang;Y. Jeong;T. Koo
中科院分区：
文献类型：
--
作者：
R. Muralidharan;T. Jang;Chan-Ho Yang;Y. Jeong;T. Koo
通过磁容量和热容量测量研究了 TmFeO3 单晶的反铁磁转变、自旋重定向和自旋补偿的开始。阐明了磁场对自旋重定向的控制和磁畴切换中的异常磁滞行为。在自旋重定向温度范围内没有观察到明显的磁介电效应。另一方面，在低于自旋补偿温度时，观察到沿 c 轴的介电异常以及在 80kOe 下高达~4% 的伴随磁介电效应。这表明稀土正铁氧体可以通过自旋补偿现象成为磁电介质系统的另一种候选者。
The onset of antiferromagnetic transition, spin reorientation, and spin compensation of TmFeO3 single crystals were investigated by the magnetic and heat capacity measurements. Control of spin reorientation by magnetic field and anomalous hysteretic behavior in domain switching were clarified. No appreciable magnetodielectric effect was observed in spin reorientation temperature region. On the other hand, below the spin compensation temperature both a dielectric anomaly along the c axis and a concomitant magnetodielectric effect up to ∼4% at 80kOe were observed. This suggests that rare-earth orthoferrites can be another candidate for magnetodielectric system through the mediation of spin compensation phenomena.