Campus Units

Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

5-1-2015

Journal or Book Title

Physical Review B

Volume

91

Issue

18

First Page

180403(R)

DOI

10.1103/PhysRevB.91.180403

Abstract

Substantial amounts of the transition metals Mn, Fe, Co, and Ni can be substituted for Li in single crystalline Li2(Li1−xTx)N. Isothermal and temperature-dependent magnetization measurements reveal local magnetic moments with magnitudes significantly exceeding the spin-only value. The additional contributions stem from unquenched orbital moments that lead to rare-earth-like behavior of the magnetic properties. Accordingly, extremely large magnetic anisotropies have been found. Most notably, the magnetic anisotropy alternates as easy plane→easy axis→easy plane→easy axis when progressing from T=Mn→Fe→Co→Ni. This behavior can be understood based on a perturbation approach in an analytical, single-ion model. The calculated magnetic anisotropies show surprisingly good agreement with the experiment and capture the basic features observed for the different transition metals.

Comments

This article is published as Jesche, Anton, L. Ke, J. L. Jacobs, B. Harmon, R. S. Houk, and P. C. Canfield. "Alternating magnetic anisotropy of Li 2 (Li 1− x T x) N (T= Mn, Fe, Co, and Ni)." Physical Review B 91, no. 18 (2015): 180403. DOI: 10.1103/PhysRevB.91.180403. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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