Magnetization reversal phenomena in (Cr0.70Ti0.30)5S6
Magnetization reversal phenomena in (Cr0.70Ti0.30)5S6
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(Cr0.70Ti0.30)5S6 中的磁化反转现象
DOI：
10.1063/1.2148624
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Anzai
中科院分区：
文献类型：
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作者：
S. Hashimoto;Y. Matsuda;Tetsuya Sato;S. Anzai
在掺杂磁性体系中，最近有报道发现了沿着磁序-磁序转变的磁化反转现象。由于不完美的长程磁序存在于这些系统中，预计MRP的系统研究将提供从微观到纳米尺度范围内的磁性系统的热磁过程的物理信息。作为一个典型的顺序顺序转变（一个状态的双重调制的螺旋和倾斜订单共线亚铁磁状态）已被称为发生在Cr 5S 6在转变温度Tt，我们调查的磁化（Cr0.70Ti0.30）5S 6上的加热和冷却运行在各种磁场。在20 Oe处，刚好低于居里温度的场冷却磁化强度具有正号;在补偿温度TCM以下，该符号变为负（第一步），并且最终在Tt以下返回到正（第二步）。在该系统中观察到的第一步MRP解释的势垒产生的非等离子体。
Magnetization reversal phenomena (MRP) along magnetic order-order transitions have recently been reported on impurity-doped magnetic systems. Because imperfect long-range magnetic order exists in these systems, it is expected that a systematic investigation of MRP will give physical information on thermomagnetic processes of magnetic systems in the range from the micro- to nanoscales. As a typical order-order transition (a state doubly modulated by helical and canting orders to a collinear ferrimagnetic state) has been known to occur on Cr5S6 at a transition temperature Tt, we investigate the magnetizations of (Cr0.70Ti0.30)5S6 on heating and cooling runs in various magnetic fields. At 20Oe, the field-cooled magnetization just below the Curie temperature has a positive sign; the sign turns negative below the compensation temperature TCM (first step) and finally returns to positive below Tt (second step). The first-step MRP observed in this system is explained by the potential barriers resulting from aniso...