Frustration-induced glass behavior in solid N 2? Audio frequency dielectric measurements

High-sensitivity dielectric constant measurements of solid N 2 in the audio frequency range have revealed the existence of strong unexpected hysteresis in the high-temperature HCP phase above an onset temperature T h =42 K . We report a sharp kink at T h, observed only when the sample is annealed at...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 284; pp. 1125 - 1126
Main Authors Pilla, S., Hamida, J.A., Muttalib, K.A., Sullivan, N.S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2000
Subjects
Dielectric
N 2
Quadrupolar glass
77.22.−d
N 2
CO
Dielectric
64.60.Cn
67.00
Quadrupolar glass
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Summary:High-sensitivity dielectric constant measurements of solid N 2 in the audio frequency range have revealed the existence of strong unexpected hysteresis in the high-temperature HCP phase above an onset temperature T h =42 K . We report a sharp kink at T h, observed only when the sample is annealed at 41.5<T<43 K for 6–8 h, suggesting that the thermal processes in this window of temperature are rather slow. We argue that the results are consistent with the breakdown of orientational ordering at T h and the onset of frustration-induced orientational glass states in the absence of site disorder above T h.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)02497-7