Journal/Book/Conference Title Title
Physical Review B
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 of Physics
Department of Chemsitry and Biochemistry
Original Publication Date
DOI of published version
UNI ScholarWorks, University of Northern Iowa, Rod Library
©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.
Shand, P. M.; Rash, T.; Streicher, M.; Kidd, T. E.; Boyle, K. R.; and Strauss, Laura, "Coercivity and Exchange Bias of Mn0.25Ti1.1S2 in the Cluster-Glass State" (2010). Faculty Publications. 10.