Antiferromagnetic exchange interactions in the Ni2Mn1.4In0.6 ferromagnetic Heusler alloy

Priolkar, K.R.; Bhobe, P.A.; Lobo, D.N.; D'Souza, S.W.; Barman, S.R.; Chakrabarti, A.; Emura, S.

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dc.contributor.author	Priolkar, K.R.
dc.contributor.author	Bhobe, P.A.
dc.contributor.author	Lobo, D.N.
dc.contributor.author	D'Souza, S.W.
dc.contributor.author	Barman, S.R.
dc.contributor.author	Chakrabarti, A.
dc.contributor.author	Emura, S.
dc.date.accessioned	2015-06-04T04:09:33Z
dc.date.available	2015-06-04T04:09:33Z
dc.date.issued	2013
dc.identifier.citation	Physical Review B. 87(14); 2013; Article ID: 144412.	en_US
dc.identifier.uri	http://dx.doi.org/10.1103/PhysRevB.87.144412
dc.identifier.uri	http://irgu.unigoa.ac.in/drs/handle/unigoa/3003
dc.description.abstract	Magnetism in Ni-Mn-Z (Z=Ga, In, Sn, Sb) Heusler alloys has so far been predominantly attributed to Rudermann-Kittel-Kasuya-Yoshida type interactions between Mn atoms. We investigate magnetic interactions in one such alloy, Ni2Mn1.4In0.6, and attempt to explain the origin of antiferromagnetic (AFM) interactions that coexist with ferromagnetic ones. Through the combination of x-ray absorption spectroscopy and x-ray magnetic circular dichroism (XMCD), we find that Ni plays an important role along with Mn in the overall magnetism. A significant hybridization that develops between Mn and Ni orbitals results in a small antiferromagnetic moment at Ni sites. The shift in the XMCD hysteresis loops in the martensitic phase suggests that antiferromagnetism results from superexchange like interactions between Mn atoms mediated by Ni.	en_US
dc.publisher	American Physical Society	en_US
dc.subject	Physics	en_US
dc.title	Antiferromagnetic exchange interactions in the Ni2Mn1.4In0.6 ferromagnetic Heusler alloy	en_US
dc.type	Journal article	en_US
dc.identifier.impf	y