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Intrinsic structural distortion and superexchange interaction in the orthorhombic rare-earth perovskites RCrO3

TitleIntrinsic structural distortion and superexchange interaction in the orthorhombic rare-earth perovskites RCrO3
Publication TypeJournal Article
Year of Publication2010
AuthorsZhou JS, Alonso JA, Pomjakushin V, Goodenough JB, Ren Y, Yan JQ, Cheng JG
Journal TitlePhysical Review B
Volume81
Pages214115
Date Published06/18
ISBN Number1098-0121
Accession NumberISI:000278936400001
KeywordsORTHOFERRITES
Abstract

High-resolution neutron powder diffraction has been applied to determine the structural evolution in the orthorhombic perovskite RCrO3 family. The structural distortions observed have been found to be closely related to the dramatic variation in the magnetic ordering temperature T-N. In addition to the reduction in the orbital overlap integral that can account for the change in T-N in the RFeO3 family, the effect of t-e hybridization due to the structural distortions are responsible for the dramatic change in T-N across the RCrO3 family.
URL<Go to ISI>://000278936400001
DOI10.1103/Physrevb.81.214115