| Y0.9Pr0.1CrO3的反常磁性 |
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| 引用本文： | 戴玉蓉,邓冬梅,王星宇,曹世勋,张金仓.Y0.9Pr0.1CrO3的反常磁性[J].低温物理学报,2012(4):253-257. |
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| 作者姓名： | 戴玉蓉 邓冬梅 王星宇 曹世勋 张金仓 |
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| 作者单位： | 上海大学物理系 |
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| 基金项目： | 国家自然科学基金(批准号:10804067,11074163)资助的课题~~ |
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| 摘 要： | 采用固相反应法制备了YCrO3多晶样品,并首次制备了和Y0.9Pr0.1CrO3多晶样品,研究了其磁性质.在场冷模式下,外加磁场为100Oe时,Y0.9Pr0.1CrO3的磁化强度-温度关系曲线显示磁化反转的异常.在尼尔温度以下,随着温度的降低,磁化强度首先增加,在96K达到最大值,约0.230emu/g.之后磁化强度开始降低,在32K变为零值;并且在32K以下,磁化强度出现负值.这种现象解释为Pr离子的顺磁效应.
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| 关 键 词： | 铬酸盐 负磁化 倾角反铁磁 |
NOVEL MAGNETIZATION IN Y0.9Pr0.1CrO3 PEROVSKITE |
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| DAI Ru-rong,DENG Dong-mei,WANG Xing-yu,CAO Shi-xun,ZHANG Jin-cang.NOVEL MAGNETIZATION IN Y0.9Pr0.1CrO3 PEROVSKITE[J].Chinese Journal of Low Temperature Physics,2012(4):253-257. |
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| Authors: | DAI Ru-rong DENG Dong-mei WANG Xing-yu CAO Shi-xun ZHANG Jin-cang |
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| Institution: | Department of Physics,Shanghai University,Shanghai 200444 |
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| Abstract: | Y0.9Pr0.1CrO3 and YCrO3 polycrystalline samples were prepared by solid state reaction and their magnetic properties have been studied.The magnetization-temperature(M～T) curve of Y0.9Pr0.1CrO3 exhibits negative magnetization in field-cooled model with applied field of 100 Oe.Below Néel temperature,magnetization increases with decreasing temperature,then achieves the maximum(MMAX) of 0.230 emu/g at the temperature about 96K.Then magnetization begins to drop with further decreasing of tempetature,passes through a zero values at the temperature of 32K.This temperature called compensation temperature(Tcomp).Below the Tcomp,magnetization becomes negative.This behavior is interpreted in paramagnetic effect of Pr ions. |
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| Keywords: | chromate canted-antiferromagnetism negative magnetization |
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