Magnetic properties of rare earth HoCrO3 chromites

Abstract：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 Cufie-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-Tcurves 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. 作者： Author： SU Yuling[1]  ZHANG Jincang[2]  FENG Zhenjie[2]  LI Zijiong[1]  SHEN Yan[1]  CAO Shixun[2] 作者單位： Department of Physics, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaDepartment of Physics, Shanghai University, Shanghai 200444, China 期 刊： 稀土學報（英文版）   ISTICEISCI Journal： Journal of Rare Earths 年，卷(期)： 2011, 29(11) 分類號： P618.7 Keywords： rare earth chromites    phase coexistence    magnetic interaction    機標分類號： F2 O4 機標關鍵詞： temperature dependence    competition mechanism    magnetic properties    higher temperature    phase coexistence    heat measurement    low temperature    external field    complex    region    interaction    rare earth    negative    typical    results    order    novel    found    dc/ac    two 基金項目： the National Natural Science Foundation of China，the Science & Technology Committee of Shanghai Municipality， the Natural Science Foundation of Henan Province，the Doctoral Innovation Fund of Zhengzhou University of Light Industry Magnetic properties of rare earth HoCrO3 chromites[期刊論文]  稀土學報（英文版） --2011, 29(11)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 existe...

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