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

Ollefs, K. ; Schöppner, Ch. ; Titov, I. ; Meckenstock, R. ; Wilhelm, F. ; Rogalev, A. ; Liu, J. ; Gutfleisch, O. ; Farle, M. ; Wende, H. ; Acet, M. (2015):
Magnetic ordering in magnetic shape memory alloy Ni-Mn-In-Co.
In: Physical Review B, 92 (22), p. 224429. ISSN 1098-0121,
[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. ; Schöppner, Ch. ; Titov, I. ; Meckenstock, R. ; Wilhelm, F. ; Rogalev, A. ; Liu, J. ; Gutfleisch, O. ; Farle, M. ; Wende, H. ; 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
Journal 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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