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Low-temperature specific heat of crystalline and amorphous Eu(MoO)

JETP Letters, ISSN: 0021-3640, Vol: 68, Issue: 8, Page: 657-661
1998
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The specific heat C of crystalline and amorphous Eu(MoO) is measured in the temperature interval 4.5-30 K. The amorphous state is obtained by applying pressure ∼7GPa at room temperature. It is found that the specific heat of the crystal at T≤7.5K is described by a cubic function of temperature, while the specific heat of the amorphous sample has a strongly non-Debye character in the entire experimental temperature interval. The curve of C for amorphous europium molybdate is analyzed in a model of soft atomic potentials, and it is shown that it agrees well with universal low-temperature anomalies of the specific heat of classical glasses obtained by quenching from the liquid. © 1998 American Institute of Physics.

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