Faculty Publications

Document Type

Article

Journal/Book/Conference Title Title

Physical Review B

Volume

82

Issue

21

First Page

214413-1

Last Page

214413-8

Abstract

Magnetic measurements have been carried out on the Mn-intercalated transition-metal dichalcogenide Mn0.25Ti1+yS2. The material, which contained a concentration y≈0.1 of excess intercalated Ti, exhibited paramagnetic behavior at high temperatures with an effective moment per Mn ion of µeff=6.07 ± 0.23 µB, which shows that the system comprises localized Mn2+ moments. A Curie-Weiss temperature ΘCW=-26 ± 1 K indicated that antiferromagnetic interactions were dominant. Deviation from Curie-Weiss behavior below 100 K signaled the formation of antiferromagnetically correlated clusters. Bifurcation of the zero-fieldcooled and field-cooled magnetizations below 20 K indicated a transition to a cluster-glass state. The clusterglass state exhibited hysteresis and a loop shift indicating exchange bias. The behavior of the coercivity and exchange bias can be understood using a model in which frozen spins at the periphery of a cluster interact with the antiferromagnetically correlated interior.

Department

Department of Physics

Department

Department of Chemsitry and Biochemistry

Comments

First published in Physical Review B, v. 82, n.21 (2010), published by the American Physical Society. DOI: 10.1103/PhysRevB.82.214413

Original Publication Date

12-2010

DOI of published version

10.1103/PhysRevB.82.214413

Repository

UNI ScholarWorks, University of Northern Iowa, Rod Library

Date Digital

2010

Copyright

©2010 P.M. Shand, T. Rash, M. Streicher, T.E. Kidd, K.R. Boyle, and L.H. Strauss. The copyright holder has granted permission for posting.

Language

EN

File Format

application/pdf

Included in

Physics Commons

Share

COinS