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arXiv 1710.00860cond-mat.mtrl-sci
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巡游铁磁体三临界区的电阻率

Electrical resistivity across the tricriticality in itinerant ferromagnet

Petr Opletal, Jan Prokleška, Jaroslav Valenta, Vladimír Sechovský

摘要:

通过电阻率测量研究了UCo 1-x Rux Al化合物在三临界点附近的不连续铁磁相图。UCo0.995Ru0.005Al在常压下和UCo0.990Ru0.010Al在0.2GPa下的相分离和铁磁性在0.4GPa下的消失被证实。电阻率随温度变化的指数在0.2GPa时由费米液体转变为非费米液体,在0.4GPa时达到最小值。我们的结果进行了比较,得到的结果上的纯UCoAl和解释不同的指数。

英文摘要:

We investigate the discontinuous ferromagnetic phase diagram near tricritical point in UCo 1-x Ru x Al compounds by electrical resistivity measurements. Separation of phases in UCo 0.995 Ru 0.005 Al at ambient pressure and in UCo 0.990 Ru 0.010 Al at pressure of 0.2 GPa and disappearance of ferromagnetism at 0.4 GPa is confirmed. The exponent of temperature dependence of electrical resistivity implies change from Fermi liquid behavior to non-Fermi liquid at 0.2 GPa and reaches minimum at 0.4 GPa. Our results are compared to results obtained on the pure UCoAl and explanation for different exponents is given.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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