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Kinetic arrest induced antiferromagnetic order in hexagonal FeMnP0.75Si0.25 alloy
- Source :
- Applied Physics Letters. 105:262405
- Publication Year :
- 2014
- Publisher :
- AIP Publishing, 2014.
-
Abstract
- 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.
- Subjects :
- Atomic diffusion
Condensed Matter::Materials Science
Paramagnetism
Materials science
Physics and Astronomy (miscellaneous)
Ferromagnetism
Condensed matter physics
Phase (matter)
Metastability
Magnetic refrigeration
Antiferromagnetism
Condensed Matter::Strongly Correlated Electrons
Crystal structure
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 105
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........e8f1f01a5695e09d445ebadc72482787