Exchange bias and glassy behaviors at high magnetic field in low doped La1-xSrxCoO3
Exchange bias and glassy behaviors at high magnetic field in low doped La1-xSrxCoO3
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低掺杂 La1-xSrxCoO3 在高磁场下的交换偏压和玻璃态行为
DOI：
10.1088/1742-6596/150/4/042231
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发表时间：
2009-03
期刊：
影响因子：
--
通讯作者：
Shujuan Yuan
中科院分区：
文献类型：
--
作者：
Baojuan Kang;Qianying Yu;Kun Xu;Jincang Zhang;Shujuan Yuan
研究了低掺杂La_（1-x）Sr_xCoO_3钴酸盐的交换偏置现象和玻璃化行为。在磁滞回线中观察到垂直和水平位移，前者在40 kOe左右的临界磁场下消失，后者持续到最后。结合R-H环的测量结果，我们认为水平位移是由于表面自旋无序区与铁磁团簇之间的交换耦合引起的，垂直位移是由于铁磁自旋的不完全反转引起的.系统地研究了低场和高场下的直流磁化强度，证实了自旋玻璃区的鲁棒存在。
Exchange bias phenomena and the glassy behavior were investigated in low doped La1-xSrxCoO3 cobaltites. Both vertical and horizontal shifts were observed in the hysteresis loops, and the former one vanishes at a critical magnetic field about 40 kOe, the latter one persists to the end. Combining with R – H loop measurement, which shows asymmetric both in resistivity maximum and its corresponding fields, we ascribe the horizontal shifts to the exchange coupling between the surface spin disorder region and ferromagnetic clusters; and the vertical one to the incompletely reversal of ferromagnetic spins. The dc magnetization at low fields and high fields were systematically investigated, and the spin glass region was approved to exist robustly.
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影响因子：
3.7
作者：
Yan-kun Tang;Young Sun;Zhaohua Cheng
通讯作者：
Yan-kun Tang;Young Sun;Zhaohua Cheng
影响因子：
3.7
作者：
J. Wu;C. Leighton
通讯作者：
J. Wu;C. Leighton
影响因子：
3.2
作者：
Yan-kun Tang;Young Sun;Zhaohua Cheng
通讯作者：
Yan-kun Tang;Young Sun;Zhaohua Cheng
影响因子：
8.6
作者：
Nikitenko, VI;Gornakov, VS;Chien, CL
通讯作者：
Chien, CL
影响因子：
8.6
作者：
Gruyters, M
通讯作者：
Gruyters, M