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Persistent URL	http://purl.org/net/epubs/work/50894
Record Status	Checked
Record Id	50894
Title	Stress-induced large Curie temperature enhancement in Fe₆₄Ni₃₆ Invar alloy
Contributors	P Gorria (Oviedo U.), D Martinez-Blanco (Oviedo U.), MJ Perez (Oviedo U.), J Blanco (Oviedo U.), A Hernando (Madrid U.), MA Laguna-Marco (ANL), D Haskel (ANL), N Souza-Neto (ANL), RI Smith (STFC Rutherford Appleton Lab.), WG Marshall (STFC Rutherford Appleton Lab.), G Garbarino (ESRF), M Mezouar (ESRF), A Fernandez-Martinez (Grenoble U.), J Chaboy (Zaragoza U.), L Fernandez Barquin (Cantabria U., Santander), JA Rodriguez Castrillon (Oviedo U.), M Moldovan (Oviedo U.), JI Garcia Alonso (Oviedo U.), J Zhang (LANL), A Llobet (LANL), JS Jiang (ANL)
Abstract	We have succeeded in increasing up to 150 K the Curie temperature in the Fe64Ni36 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.
Organisation	ISIS , ISIS-PEARL , ISIS-POLARIS , STFC
Keywords	Physics , Materials
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Rev B 80 (2009): 064421.	doi:10.1103/PhysRevB.80.064421		2009