Local atomic structure of martensitic Ni(2+x)Mn(1-x)Ga: An EXAFS study

dc.contributor.author	Bhobe, P.A.
dc.contributor.author	Priolkar, K.R.
dc.contributor.author	Sarode, P.R.
dc.date.accessioned	2015-06-03T09:06:11Z
dc.date.available	2015-06-03T09:06:11Z
dc.date.issued	2006
dc.identifier.citation	Physical Review B. 74(22); 2006; Article ID 224425	en_US
dc.identifier.uri	http://dx.doi.org/10.1103/PhysRevB.74.224425
dc.identifier.uri	http://irgu.unigoa.ac.in/drs/handle/unigoa/1928
dc.description	Copyright with the publisher.
dc.description.abstract	The local atomic structure of Ni(2+x)Mn(1-x)Ga with 0 less than or equal to x less than or equal to 0.16 alloys was explored using Mn and Ga K-edge extended x-ray-absorption fine-structure (EXAFS) measurement. In order to study the atomic re-arrangements that occur upon martensitic transformation, room-temperature and low-temperature EXAFS were recorded. The changes occurring in the L2(1) unit cell and the bond lengths obtained from the analysis enables us to determine the modulation amplitudes over which the constituent atoms move giving rise to the shuffling of the atomic planes in the modulated structure. The EXAFS analysis also suggests the changes in hybridization of Ga-p and Ni-d orbitals associated with the local symmetry breaking upon undergoing martensitic transition.	en_US
dc.publisher	American Physical Society	en_US
dc.subject	Physics	en_US
dc.title	Local atomic structure of martensitic Ni(2+x)Mn(1-x)Ga: An EXAFS study	en_US
dc.type	Journal article
dc.identifier.impf	y