Large zero-field cooled exchange-bias in bulk Mn2PtGa
Nayak AK, Nicklas M, Chadov S, Shekhar C, Skourski Y, Winterlik J, Felser C (2013)
Publication Type: Journal article
Publication year: 2013
Journal
Book Volume: 110
Article Number: 127204
Journal Issue: 12
DOI: 10.1103/PhysRevLett.110.127204
Abstract
We report a large exchange-bias effect after zero-field cooling the new tetragonal Heusler compound Mn2PtGa from the paramagnetic state. The first-principles calculation and the magnetic measurements reveal that Mn 2PtGa orders ferrimagnetically with some ferromagnetic inclusions. We show that ferrimagnetic ordering is essential to isothermally induce the exchange anisotropy needed for the zero-field cooled exchange bias during the virgin magnetization process. The complex magnetic behavior at low temperatures is characterized by the coexistence of a field-induced irreversible magnetic behavior and a spin-glass-like phase. The field-induced irreversibility originates from an unusual first-order ferrimagnetic to antiferromagnetic transition, whereas the spin-glass-like state forms due to the existence of antisite disorder intrinsic to the material. © 2013 American Physical Society.
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How to cite
APA:
Nayak, A.K., Nicklas, M., Chadov, S., Shekhar, C., Skourski, Y., Winterlik, J., & Felser, C. (2013). Large zero-field cooled exchange-bias in bulk Mn2PtGa. Physical Review Letters, 110(12). https://doi.org/10.1103/PhysRevLett.110.127204
MLA:
Nayak, A. K., et al. "Large zero-field cooled exchange-bias in bulk Mn2PtGa." Physical Review Letters 110.12 (2013).
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