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高压下Sr_2FeMoO_6的电学性质与相变 被引量:2

ELECTRICAL PROPERTIES AND PHASE TRANSITION OF Sr_2FeMoO_6 UNDER HIGH PRESSURE
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摘要 采用电阻和电容测量方法,在金刚石压砧装置上研究了Sr2FeMoO6多晶粉末在室温下和20GPa内的电阻、电容和压力的关系。实验结果表明,样品的电阻和电容在约2.1GPa的压力下都产生了突然的变化,发生了金属化相变。这些变化可能是由高压下Sr2FeMoO6的电子结构相变引起的。 The resistance-pressure and capacitance-pressure relationships for double perovskite material of Sr2FeMoO6 at room temperature and up to 20 GPa were studied using a diamond anvil cell. The experimental results show that Sr2FeMoO6 (a kind of half-metal material) undergoes metallic transition at about 2.1 GPa. We believe this transition is related with electronic structure transition under high pressure.
出处 《高压物理学报》 EI CAS CSCD 北大核心 2002年第2期137-139,共3页 Chinese Journal of High Pressure Physics
基金 中国科学院"百人计划"基金(1999年) 国家自然科学基金委员会"杰出青年基金"(59725105)
关键词 高压 Sr2FeMoO6 电学性质 原位测试 钙钛矿结构 金属化相变 电阻 电容 压力 巨磁电阻效应 钼氧化物 Electric properties Electronic structure High pressure effects Magnetoresistance Phase transitions
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参考文献5

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同被引文献8

  • 1Kobayashi K-I,Kimura T,Sawada H,et al.Room-Temperature Magnetoresistance in an Oxide Material with an Ordered Double-Perovskite Structure [J].Nature,1998,395:677.
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  • 8崔启良,涂宝招,潘跃武,王成新,高春晓,张剑,刘景,邹广田.氧化镓的同步辐射研究[J].高压物理学报,2002,16(2):81-84. 被引量:3

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