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Issue 1, 2021
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Distinctive exchange bias and unusual memory effects in magnetically compensated Pr0.75Gd0.25ScGe

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Abstract

Tuning the chemistry of materials often leads to discoveries of interesting phenomena that expand basic science and support practical applications. Here we show how different spin–orbit coupling in light and heavy lanthanides can be exploited to create complex magnetic ground states and thereby unusual spontaneous exchange bias (SEB), conventional exchange bias (CEB), and magnetic memory effects in almost ideally magnetically compensated Pr0.75Gd0.25ScGe, which is a representative of the PrScGe–GdScGe solid solution. We report the synthesis and detailed characterization of Pr0.75Gd0.25ScGe by X-ray powder diffraction, scanning electron microscopy, and magnetization measurements in magnetic fields up to 140 kOe. Partial substitution of a light lanthanide, Pr, with a heavy lanthanide, Gd, results in a complex magnetic ground state, which includes large spontaneous and conventional exchange biases reaching magnitudes of ∼1.7 kOe and ∼3.5 kOe, respectively, at T = 2 K, as well as shape dependent magnetic compensation and bias phenomena occurring in small external fields.

Graphical abstract: Distinctive exchange bias and unusual memory effects in magnetically compensated Pr0.75Gd0.25ScGe

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Article information


Submitted
27 Oct 2020
Accepted
18 Nov 2020
First published
27 Nov 2020

This article is Open Access

J. Mater. Chem. C, 2021,9, 181-188
Article type
Paper

Distinctive exchange bias and unusual memory effects in magnetically compensated Pr0.75Gd0.25ScGe

T. Del Rose, A. K. Pathak, Y. Mudryk and V. K. Pecharsky, J. Mater. Chem. C, 2021, 9, 181
DOI: 10.1039/D0TC05087C

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