Exchange bias up to room temperature in antiferromagnetic hexagonal Mn 3Ge

Qian JF, Nayak AK, Kreiner G, Schnelle W, Felser C (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Journal of Physics D: Applied Physics IOP Publishing: Hybrid Open Access

Book Volume: 47

Article Number: 305001

Journal Issue: 30

DOI: 10.1088/0022-3727/47/30/305001

Abstract

Mn3.04Ge0.96 has a hexagonal crystal structure, which can be stabilized by high-temperature annealing, and shows antiferromagnetic order with a small ferromagnetic component of less than 0.1μB and a coercivity of 0.45 T. In the ordered phase, magnetization curves M(H) exhibit an exchange bias of 62 mT at T = 2 K after field cooling, which is observable up to room temperature. The exchange anisotropy is suggested to originate from the exchange interaction between the host of triangular-antiferromagnetic Mn 3Ge units and embedded ferrimagnetic-like clusters. Such clusters develop when excess Mn atoms occupy empty Ge sites in the original triangular-antiferromagnetic structure of Mn3Ge. © 2014 IOP Publishing Ltd.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Qian, J.F., Nayak, A.K., Kreiner, G., Schnelle, W., & Felser, C. (2014). Exchange bias up to room temperature in antiferromagnetic hexagonal Mn 3Ge. Journal of Physics D: Applied Physics, 47(30). https://doi.org/10.1088/0022-3727/47/30/305001

MLA:

Qian, J. F., et al. "Exchange bias up to room temperature in antiferromagnetic hexagonal Mn 3Ge." Journal of Physics D: Applied Physics 47.30 (2014).

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