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Hernando Grande, Antonio (2009) Stress-induced large Curie temperature enhancement in Fe_(64)Ni_(36) Invar alloy. Physical review B, 80 (6). ISSN 1098-0121
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Official URL: http://dx.doi.org/10.1103/PhysRevB.80.064421
Abstract
We have succeeded in increasing up to 150 K the Curie temperature in the Fe_(64)Ni_(36) invar alloy by means of a severe mechanical treatment followed by a heating up to 1073 K. The invar behavior is still present as revealed by the combination of magnetic measurements with neutron and x-ray techniques under extreme conditions, such as high temperature and high pressure. The proposed explanation is based in a selective induced microstrain around the Fe atoms, which causes a slight increase in the Fe-Fe interatomic distances, thus reinforcing ferromagnetic interactions due to the strong magnetoelastic coupling in these invar compounds.
Item Type: | Article |
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Additional Information: | ©2009 The American Physical Society. |
Uncontrolled Keywords: | Fe-Ni alloys; Magnetic-properties; Solid-solutions; Nickel alloys; Pressure; Iron; Transformation; Transition; Dependence; Expansion |
Subjects: | Sciences > Physics > Materials Sciences > Physics > Solid state physics |
ID Code: | 44089 |
Deposited On: | 24 Aug 2017 14:58 |
Last Modified: | 04 Sep 2017 10:11 |
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