Crystal growth of Sm0.3Tb0.7FeO3 and spin reorientation transition in Sm1−xTbxFeO3 orthoferrite

Investigation on ultrafast opto-magnetism in rare earth orthoferrites single crystals

“…现出优异的物理性能 [42,43] [27,28,45,46] . 图16(a)是零场冷却(ZFC)测试的 Sm0.3Tb0.7FeO3的a和c切样品的磁温曲线, 从图中我们 可以清晰地发现, 在20~50 K温度范围发生了一个磁转 图 15 (网络版彩图)SmxDy1−xFeO3的磁温曲线 [44] 图 16 (网络版彩图)Sm0.3Tb0.7FeO3晶体a和c方向的磁温曲线(a)及a切样品不同外磁场冷却磁温曲线(b) [46] 变, 该磁转变就是铁离子自旋重取向相转变, 即弱铁…”

Nd3+ induced twofold continuous spin reorientation transition and magnetization along the b-axis in a Dy0.9Nd0.1FeO3 single crystal

“…For example, adjusting the SRT temperature effectively through changing the Tb concentration in Sm x Tb 1−x FeO 3 affects the trigger temperature of the spin switching effect by applying different magnetic fields in Dy 0.5 Er 0.5 FeO 3 and results in threefold SRT with Γ 4 → Γ 4+2 → Γ 1 → Γ 2 in Dy 0.75 Nd 0.25 FeO 3 . [11][12][13] Also, the doping of Tb 3+ and Gd 3+ in DyFeO 3 can realize the generation and reversal of the ferromagnetic moment, as well as the interconversion of multiferroic domains and domain walls. 14,15 Previous research on RFeO 3 suggested that the b-axis magnetization (F y ) conflicts with the observed strong AFM coupling between nearest iron neighbors; therefore the configuration of Γ 3 (C x , F y , A z ) doesn't exist.…”

Terahertz spectroscopy study of doping and magnetic field induced effects on spin reorientation in Ho_1–<i>x</i>Y_<i>x</i>FeO₃ single crystals

“…SmFeO 3 本身也在RFeO 3 体系中具有最高的自旋重取向温 度(T SR 约为480 K). 目前, 人们认为Sm x R 1-x FeO 3 是实现室温的自旋重取向的最佳材料 [9,11,24,26] . 例 如, Wang等 [11] 生长了高质量的Sm 0.7 Tb 0.3 FeO 3 单 晶 , 自 旋 重 取 向 的 温 区 为 330-360 K. 随 后 , Liu等 [24] 发现在Sm 3+ 离子掺杂的DyFeO 3 单晶样 品中, 样品的自旋重取向温区随着Sm 3+ 离子掺杂 浓度上升而线性上升.…”