Direct measurement of magnetization isotherms of Fe64Ni36 Invar alloy in a diamond anvil cell

被引：4

作者：

Kamarad, J. ^{[1
,2
]}

Misek, M. ^{[1
]}

Arnold, Z. ^{[1
]}

机构：

[1] Inst Phys AS CR Vvi, Prague 18221 8, Czech Republic

[2] Inst Phys AS CR Vvi, Dept Magnet & Superconductors, Prague 16253 6, Czech Republic

来源：

HIGH PRESSURE RESEARCH | 2014年 / 34卷 / 04期

关键词：

Invar; magnetization; DAC; pressure; FE-NI; PRESSURE; IRON; ANTIFERROMAGNETISM; ORIGIN;

D O I：

10.1080/08957959.2014.971024

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetization isotherms of the Fe64Ni36 Invar alloy have been measured under pressure up to 5.3 GPa in magnetic field up to 5 T using a diamond anvil cell and SQUID magnetometer. The unambiguous change of the pressure parameter dlnM(S)/dP (from -9 to -13x10(-2) GPa(-1)) has been observed in a narrow pressure interval from 2.5 to 3.5 GPa at all temperatures in the range from 5 to 300 K. The pressure interval, where the sharp decrease in magnetization was observed, coincides with the critical pressures of the pressure-induced decrease in Fe-moment that were determined by the X-ray Magnetic Circular Dichroism and the X-ray Emission Spectra studies, recently. The pronounced decrease in the Curie temperature of the Fe64Ni36 alloy under pressure, dT(C)/dP = -44 +/- 2 K/GPa, has been confirmed.

引用

页码：365 / 370

页数：6

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