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Phase-separated magnetic ground state in Mn sub(3)Ga sub(0.45)Sn sub(0.55)C

Show simple item record Dias, E.T. Priolkar, K.R. Nigam, A.K. Singh, R. Das, A. Aquilanti, G. 2018-01-17T04:30:40Z 2018-01-17T04:30:40Z 2017
dc.identifier.citation Physical Review B. 95(14); 2017; ArticleID 144418. en_US
dc.description.abstract The existence of nonergodic ground states is considered as a precursor to a first-order long-range magnetostructural transformation. Mn sub(3)Ga sub(0.45)Sn sub(0.55)C lies compositionally between two compounds, Mn sub(3)GaC and Mn sub(3)SnC , undergoing first-order magnetic transformation. However, Mn sub(3)Ga sub(0.45)Sn sub(0.55)C, which crystallizes in a single-phase cubic structure, exhibits more than one long-range magnetic transition. Using a combination of magnetization, ac susceptibility, neutron diffraction, and x-ray-absorption fine-structure techniques, it is shown that, although Mn sub(3)Ga sub(0.45)Sn sub(0.55)C exhibits long-range magnetic order, it presents a cluster glassy ground state due to formation of magnetically ordered Ga-rich and Sn-rich clusters. The clusters are big enough to present signatures of long-range magnetic order but are distributed in a way that limits interactions between two clusters of the same type, leading to a frozen magnetic state at low temperatures. The main reason for such a cluster-glass state is the difference in the local structure of Mn atoms that find themselves in Ga-rich and Sn-rich clusters. en_US
dc.publisher American Physical Society en_US
dc.subject Physics en_US
dc.title Phase-separated magnetic ground state in Mn sub(3)Ga sub(0.45)Sn sub(0.55)C en_US
dc.type Journal article en_US
dc.identifier.impf y

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