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

Physical Review Letters American Physical Society

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.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

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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