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Mechanism of magnetostructural transformation in multifunctional Mn sub(3)GaC

Show simple item record Dias, E.T. Priolkar, K.R. Ranjan, R. Nigam, A.K. Emura, S. 2018-01-17T04:30:40Z 2018-01-17T04:30:40Z 2017
dc.identifier.citation Journal of Applied Physics. 122(10); 2017; ArticleID_103906. en_US
dc.description.abstract Mn sub(3)GaC undergoes a ferromagnetic to antiferromagnetic, volume discontinuous cubic-cubic phase transition as a function of temperature, pressure, and magnetic field. Through a series of temperature dependent x-ray absorption fine structure spectroscopy experiments at the Mn K and Ga K edge, it is shown that the first order magnetic transformation in Mn sub(3)GaC is entirely due to distortions in the Mn sub-lattice and with a very little role for Mn-C interactions. The distortion in the Mn sub-lattice results in long and short Mn-Mn bonds with the longer Mn-Mn bonds favoring ferromagnetic interactions and the shorter Mn-Mn bonds favoring antiferromagnetic interactions. At the first order transition, the shorter Mn-Mn bonds exhibit an abrupt decrease in their length resulting in an antiferromagnetic ground state and a strained lattice. en_US
dc.publisher AIP en_US
dc.subject Physics en_US
dc.title Mechanism of magnetostructural transformation in multifunctional Mn sub(3)GaC en_US
dc.type Journal article en_US
dc.identifier.impf y

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