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Evidence of new high-pressure magnetic phases in Fe–Pt Invar alloy |
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| Authors: | M Matsushita S Endo K Miura F Ono |
| Institution: | a Department of Physics, Faculty of Sciences, Okayama University, Tsushimanaka 3-1-1, Okayama 700-8530, Japan b Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan |
| Abstract: | To investigate the magnetic properties of disordered Fe70Pt30 Invar alloy under high pressure, measurements of the real part of the AC susceptibility (χ) were made under pressure up to 7.5 GPa in the temperature range 4.2–385 K using a cubic anvil high-pressure apparatus. The Curie temperature (TC) decreased with increasing pressure, and then, two new high-pressure magnetic phases appeared. These results show that the ferromagnetism of Fe–Pt Invar alloy becomes weaker, and the antiferromagnetic interaction becomes dominant with increasing pressure. |
| Keywords: | Fe–Pt Invar alloy High pressure AC susceptibility measurement Magnetic phase transition Reentrant spin glass |
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