Kripal, Ram and Mishra, Indrajeet and Gupta, S. K. and Arora, Manju (2009) EPR and optical absorption studies on VO2+ ions in calcium fumarate trihydrate single crystals. Chemical Physics Letters, 484 (4-6). pp. 200-206. ISSN 0009-2614

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Abstract

Electron Paramagnetic Resonance (EPR) studies of VO2+ ions in calcium fumarate trihydrate single crystals have been done at room temperature. EPR analysis indicates the presence of two magnetically inequivalent VO2+ sites. For the two sites the spin Hamiltonian parameters are, Site I: gx = 1.9689,gy = 2.0087,gz = 1.9344, Ax = 73,Ay = 88,Az = 202; Site II: gx = 1.9675,gy = 2.0100,gz = 1.9346,Ax = 75,Ay = 90, Az = 206 (×10−4) cm−1. The optical absorption study is also carried out at room temperature. By correlating EPR and optical data the nature of bonding in the crystal is discussed. The three-line superhyperfine structure has been attributed to two protons.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Subjects:	Chemistry Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	17 Apr 2012 05:41
Last Modified:	17 Apr 2012 05:41
URI:	http://npl.csircentral.net/id/eprint/138

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