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arXiv 1610.04487cond-mat.mes-hallcond-mat.mtrl-sci
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Ni $_{1-x}$ Rh $_x$纳米合金的DC磁化研究

DC Magnetization study of Ni$_{1-x}$Rh$_x$ nanoalloy

P. Swain, A. Thamizhavel, Sanjeev K. Srivastava

摘要:

Ni $_{1-x}$ Rh $_x$块体合金在临界浓度$x_c \sim$ 0.37处表现出铁磁到顺磁的量子相变(QPT)。通过控制Ni和Rh原子间的短程相互作用,在铁磁性层下方出现了一个自旋玻璃相。我们采用化学回流法合成了两种不同浓度和两种不同反应时间的纳米合金。从直流磁化强度测量,铁磁性和自旋玻璃相的存在,在这些纳米合金被证实。在一定温度下,ZFC和FC曲线均呈现台阶状特征,表明存在自旋玻璃相。

英文摘要:

Ni$_{1-x}$Rh$_x$ bulk alloys exhibit a ferromagnetic to paramagnetic quantum phase transition (QPT) at the critical concentration $x_c \sim$ 0.37. A spin glass phase arises below the Ferromagnetism by controlling the short range interaction between Ni and Rh atoms. we have synthesized nanoalloys of two different concentrations with two different reaction times by chemical reflux method. From the dc magnetization measurements, existence of ferromagnetism and spin glass phase in these nanoalloys is confirmed. A step like feature in both ZFC and FC curve at certain temperature indicates the existence of the spin glass phase.

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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