Bhat, SV and Dhar, V and Srinivasan, R (1981) ESR Studies of Phase Transitions in Double Propionates: Dicalcium Barium Propionate Ca2Ba(C2H5COO)6. In: Journal Of The Physical Society Of Japan ., 50 (7). pp. 2312-2316.
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Single crystal [(111) and (100) planes], and powder ESR of Mn2+ (substituting for Ca2+) in Ca2Ba(C2H5COO)6 in the temperature range 220°C to -160°C shows (i) a doubling of both the physically and chemically inequivalent sites, and a change in the magnitude (150 G at -6°C to 170 G at -8°C) as well as the orientation of the D tensor across the -6°C transition and (ii) an inflection point in the D vs T plot across the -75°C transition. The oxygen octahedra around the Ca2+ sites are inferred to undergo alternate rotations, showing the participation of the carboxyl oxygens in the -6°C transition. A relation of the type D=D0(1+αT+βT2) seems to fit the D variation satisfactorily.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal Of The Physical Society Of Japan . |
| Publisher: | Physical Society Japan |
| Additional Information: | Copyright of this article belongs to Physical Society Japan. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 17 Jul 2009 08:49 |
| Last Modified: | 03 Aug 2011 11:17 |
| URI: | http://eprints.iisc.ac.in/id/eprint/20712 |
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