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Low-temperature thermal expansion of γ-irradiated ruby

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journal contribution
posted on 03.05.2006 by Ian J. Brown, M.A. Brown
Measurements of the low-temperature thermal expansion of γ-irradiated rubies have been made with use of a three-terminal capacitance dilatometer. The data exhibit a positive Schottky-type anomaly at ∼3.9 K, not present in the data obtained for a pure Al2O3 sample, and this contribution to the thermal expansion has been tentatively attributed to the presence of Cr2+ (produced by γ irradiation) exhibiting a large positive magnetic Grüneisen coefficient as predicted by a dynamic Jahn-Teller model.

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  • Science

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  • Physics

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516486 bytes

Citation

BROWN, I. and BROWN. M., 1981. Low-temperature thermal expansion of γ-irradiated ruby. Physical Review Letters, 46(13), pp 835–837

Publisher

© American Physical Society

Publication date

1981

Notes

This article has been published in the journal, Physical Review Letters [© American Physical Society]. It is also available at: http://link.aps.org/abstract/PRL/v46/p835.

ISSN

0031-9007

Language

en

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