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巨磁阻材料Sr2CrWO6高压下的结构稳定性和电学特性

DOI: 10.11858/gywlxb.2005.04.018, PP. 381-384

Keywords: 同步辐射,双钙钛矿结构,磁电阻材料

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Abstract:

采用金刚石压砧高压装置,研究了双钙钛矿结构化合物Sr2CrWO6在室温下、34.5GPa压力内的同步辐射X射线衍射谱,发现在9.6GPa的压力点样品的结构有所变化。结合室温下20GPa内电阻和电容随压力的变化,证明样品在9GPa附近发生了晶体结构相变,而在2~5GPa的压力范围内样品发生了电子结构相变。

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