Magnetic properties of rare earth HoCrO3 chromites
来源期刊：Journal of Rare Earths2011年第11期
论文作者：苏玉玲 张金仓 冯振杰 李子炯 沈岩 曹世勋
文章页码：1060 - 1065
摘 要：The temperature dependence of the magnetic properties was systemically studied by dc/ac magnetization and specific heat measurement for heavy rare earth HoCrO3 chromites.The results revealed the existence of complex phase coexistence and competitive magnetic behavior in HoCrO3 chromites.It was found that,in the region of higher temperature above 141.0 K,HoCrO3 behaved as a typical Curie-Weiss paramagnetic（PM）.And in the region of low temperature,a novel magnetization behavior was observed with negative magnetization（diamagnetism-like） characteristics under an external field of 100 Oe and M-T curves exhibited two symmetrical branches for field cooling（FC） and zero field cooling（ZFC） modes.This behavior indicated the coexistence of canted antiferromagnetic（CAFM） and weak ferromagnetic（FM） phase.These also exhibited the existence of competition mechanism below characteristic temperature TN1=141.0 K and the magnetic order of Ho ion below 7.5 K.The current complex magnetization might be attributed to the interaction between paramagnetic Ho3+ moments and canted Cr3+ moments.
苏玉玲1，张金仓2，冯振杰2，李子炯1，沈岩1，曹世勋2
1. Department of Physics,Zhengzhou University of Light Industry2. Department of Physics,Shanghai University
摘 要：The temperature dependence of the magnetic properties was systemically studied by dc/ac magnetization and specific heat measurement for heavy rare earth HoCrO3 chromites.The results revealed the existence of complex phase coexistence and competitive magnetic behavior in HoCrO3 chromites.It was found that,in the region of higher temperature above 141.0 K,HoCrO3 behaved as a typical Curie-Weiss paramagnetic（PM）.And in the region of low temperature,a novel magnetization behavior was observed with negative magnetization（diamagnetism-like） characteristics under an external field of 100 Oe and M-T curves exhibited two symmetrical branches for field cooling（FC） and zero field cooling（ZFC） modes.This behavior indicated the coexistence of canted antiferromagnetic（CAFM） and weak ferromagnetic（FM） phase.These also exhibited the existence of competition mechanism below characteristic temperature TN1=141.0 K and the magnetic order of Ho ion below 7.5 K.The current complex magnetization might be attributed to the interaction between paramagnetic Ho3+ moments and canted Cr3+ moments.
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