Observation of spin glass behavior in chiral Mn48Fe34Si18 with a β -Mn related structure

Kroder J, Gooth J, Schnelle W, Fecher GH, Felser C (2019)

Publication Type: Journal article

Publication year: 2019

Journal

AIP Advances AIP Publishing

Book Volume: 9

Article Number: 055327

Journal Issue: 5

DOI: 10.1063/1.5089191

Abstract

The ternary silicide system Fe-Mn-Si exhibits several complex magnetic phases and the chemical similarity of Fe and Mn enables these two elements to be mutually substituted over a wide compositional range. Because this substitution results in chemical disorder and often causes competing magnetic exchange interactions, frustrated spin glass ordering is expected to occur for some Fe-Mn-Si phases. However, the observation of a spin glass state within these alloys has been elusive to date. This paper reports magnetization and ac susceptibility measurements on Mn48Fe34Si18. The compound crystallizes in a Mn3IrSi-type structure, which is closely related to that of β-Mn. Typical spin glass behavior is observed at low temperatures. This comprises a bifurcation of field-cooled and zero-field-cooled magnetization, a displacement of the field-cooled hysteresis loop, magnetic relaxation, a memory effect, and a sharp, frequency-dependent cusp in the ac susceptibility at the freezing temperature. Mn48Fe34Si18 is demonstrated to be a canonical spin glass.

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:

Kroder, J., Gooth, J., Schnelle, W., Fecher, G.H., & Felser, C. (2019). Observation of spin glass behavior in chiral Mn48Fe34Si18 with a β -Mn related structure. AIP Advances, 9(5). https://doi.org/10.1063/1.5089191

MLA:

Kroder, Johannes, et al. "Observation of spin glass behavior in chiral Mn48Fe34Si18 with a β -Mn related structure." AIP Advances 9.5 (2019).

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