An electron spin resonance study of Mn2+doped calcium hydrazine carboxylate monohydrate

Abdel Gawad, M. M. ; Mahesh, G. V. ; Patil, K. C. ; Bhat, S. V. (1994) An electron spin resonance study of Mn2+doped calcium hydrazine carboxylate monohydrate Bulletin of Materials Science, 17 (6). pp. 1131-1141. ISSN 0250-4707

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Official URL: http://www.ias.ac.in/j_archive/bms/17/6/1131-1142/...

Related URL: http://dx.doi.org/10.1007/BF02757591

Abstract

Single crystals of calcium hydrazine carboxylate, monohydrate have been studied by ESR of Mn2+ doped in the calcium sites. X-band ESR indicated a large crystal field splitting necessitating experiments at Q band. The analysis shows two magnetically inequivalent (but chemically equivalent) sites with g xx = 2.0042±0.0038,g yy=2.0076 ±0.0029,g zz=2.0314±0.001,A zz=0.0099±0.0002 cm-1,A xx=0.0092±0.0002 cm-1,A yy=0.0082±0.0002 cm-1,D=3/2Dzz=0.0558±0.0006 cm-1, and E=1/2 (Dyy-Dyy)=0.0127±0.0002 cm-1. One of the principal components of the crystal field, (Dzz), is found to be along the Ca ↔Ca direction in the structure and a second one, (Dxx), along the perpendicular to the plane of the triangle formed by three neighbouring calciums. The A tensor is found to have an orientation different from that of the g and D tensors reflecting the low symmetry of the Ca2+ sites.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Electron Spin Resonance; Mn2+ESR; Low Symmetry Effects in ESR; Ca(N2H3COO)2H2O
ID Code:2872
Deposited On:09 Oct 2010 05:39
Last Modified:16 May 2016 13:47

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