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Magnetic ordering in magnetic shape memory alloy Ni-Mn-In-Co

Ollefs, K. and Schöppner, Ch. and Titov, I. and Meckenstock, R. and Wilhelm, F. and Rogalev, A. and Liu, J. and Gutfleisch, O. and Farle, M. and Wende, H. and Acet, M. (2015):
Magnetic ordering in magnetic shape memory alloy Ni-Mn-In-Co.
In: Physical Review B, p. 224429, 92, (22), ISSN 1098-0121,
[Online-Edition: http://dx.doi.org/10.1103/PhysRevB.92.224429],
[Article]

Abstract

Structural and magnetic properties across the martensite-austenite phase transitions in the shape memory alloy Ni-Mn-In-Co are studied using complementary experimental techniques: ferromagnetic resonance, macroscopic magnetization measurements, and x-ray magnetic circular dichroism in the temperature range from 5 to 450 K. Ferromagnetic resonance experiments show coexisting antiferromagnetic and ferromagnetic correlations for the martensite phase and ferromagnetic and paramagnetic correlations in the austenite phase. Magnetization measurements reveal spin-glass-like behavior for T < 30 K and Ni and Co K-edge x-ray magnetic circular dichroism measurements confirm an assignment of a ferromagnetic resonance line purely to Ni (and Co) for a wide temperature range from 125 to 225 K. Hence a combined analysis of ferromagnetic resonance and x-ray magnetic circular dichroism allows us to attribute particular magnetic resonance signals to individual elemental species in the alloy.

Item Type: Article
Erschienen: 2015
Creators: Ollefs, K. and Schöppner, Ch. and Titov, I. and Meckenstock, R. and Wilhelm, F. and Rogalev, A. and Liu, J. and Gutfleisch, O. and Farle, M. and Wende, H. and Acet, M.
Title: Magnetic ordering in magnetic shape memory alloy Ni-Mn-In-Co
Language: English
Abstract:

Structural and magnetic properties across the martensite-austenite phase transitions in the shape memory alloy Ni-Mn-In-Co are studied using complementary experimental techniques: ferromagnetic resonance, macroscopic magnetization measurements, and x-ray magnetic circular dichroism in the temperature range from 5 to 450 K. Ferromagnetic resonance experiments show coexisting antiferromagnetic and ferromagnetic correlations for the martensite phase and ferromagnetic and paramagnetic correlations in the austenite phase. Magnetization measurements reveal spin-glass-like behavior for T < 30 K and Ni and Co K-edge x-ray magnetic circular dichroism measurements confirm an assignment of a ferromagnetic resonance line purely to Ni (and Co) for a wide temperature range from 125 to 225 K. Hence a combined analysis of ferromagnetic resonance and x-ray magnetic circular dichroism allows us to attribute particular magnetic resonance signals to individual elemental species in the alloy.

Journal or Publication Title: Physical Review B
Volume: 92
Number: 22
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 22 Feb 2016 12:59
Official URL: http://dx.doi.org/10.1103/PhysRevB.92.224429
Identification Number: doi:10.1103/PhysRevB.92.224429
Funders: This work was supported by Deutsche Forschungsgemeinschaft via priority program SPP1599.
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