Non-linear susceptibility studies of La0.85Ca0.15Mn0.95Fe0.05O3

被引：11
作者：
Khan, Hadayat Ullah [1 ]
Rabia, Kaneez [1 ]
Mumtaz, Arif [1 ]
Hasanain, Syed Khursheed [1 ]
机构：
[1] Quaid I Azam Univ, Dept Phys, Magnetism & Superconductiv Lab, Islamabad 45320, Pakistan
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 10期
关键词：
D O I：
10.1088/0953-8984/19/10/106202
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Linear and non- linear dynamic properties of a re- entrant ferromagnetic polycrystalline bulk La0.85Ca0.15Mn0.95Fe0.05O3 sample are studied using AC susceptibility. This sample composition shows a transition from paramagnetic ( PM) to ferromagnetic ( FM) at around 174 K and to spin glass (SG) at similar to 100 K. The dynamic behaviour is investigated in the intermediate temperature range ( T-g < T < T-c). A prominent non- linear susceptibility is observed in this range, signifying the decomposition of the FM network into clusters by a random magnetic field which is expected to be generated by PM spins in the FM region. The results are supported by a study of the AC frequency and DC field effect on the non- linear susceptibility.
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页数：10
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