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Kinetic arrest induced antiferromagnetic order in hexagonal FeMnP0.75Si0.25 alloy
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.ORCID iD: 0000-0001-7724-8299
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.ORCID iD: 0000-0001-9317-6205
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
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2014 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 105, no 26, 262405- p.Article in journal (Refereed) Published
Abstract [en]

The magnetic state of the FeMnP0.75Si0.25 alloy was investigated by first principles calculations. The coexistence of ferromagnetic and antiferromagnetic phases in FeMnP0.75Si0.25 with the same hexagonal crystal structure was revealed. It was found that kinetic arrest during the transition from the high temperature disordered paramagnetic phase to the low temperature ordered ferromagnetic phase results in the intermediate metastable and partially disordered antiferromagnetic phase. We propose that the ratio of the ferromagnetic and antiferromagnetic phases in the FeMnP0.75Si0.25 sample can be tuned by adjusting the kinetic process of atomic diffusion. The investigations suggest that careful control of the kinetic diffusion process provides another tuning parameter to design candidate magnetocaloric materials.

Place, publisher, year, edition, pages
2014. Vol. 105, no 26, 262405- p.
Keyword [en]
Magnetocaloric Materials, Approximation, Transition, Magnetism
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Identifiers
URN: urn:nbn:se:kth:diva-159371DOI: 10.1063/1.4905270ISI: 000347171300029Scopus ID: 2-s2.0-84924873345OAI: oai:DiVA.org:kth-159371DiVA: diva2:785435
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Swedish Research CouncilEU, European Research CouncilStandUpKnut and Alice Wallenberg Foundation
Note

QC 20150203

Available from: 2015-02-03 Created: 2015-01-29 Last updated: 2017-12-05Bibliographically approved

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Li, WeiSchönecker, StephanVitos, Levente

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