Thermodynamics of spin ice in staggered and direct (along the [111] axis) fields in the cluster approximation

Journal Article · Wed Feb 15 00:00:00 EST 2017 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776117020182· OSTI ID:22617065

Pavlovskii, M. S. ^[1]

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1. Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)

We have analyzed the low-temperature thermodynamic properties of spin ice in the staggered and direct (acting along the [111] axis) fields for rare-earth oxides with the chalcolamprite structure and general formula Re{sub 2}{sup 3+}Me{sub 2}{sup 4+}O{sub 7}{sup 2-}. Calculations have been performed in the cluster approximation. The results have been compared with experimental temperature dependences of heat capacity and entropy for Dy{sub 2}Ti{sub 2}O{sub 7} compound for different values of the external field in the [111] direction. The experimental data and calculated results have also been compared for the Pr{sub 2}Ru{sub 2}O{sub 7} compound with the antiferromagnetic ordering of magnetic moments of ruthenium ions, which gives rise to the staggered field acting on the system of rare-earth ions. The calculated temperature dependences of heat capacity and entropy are in good agreement with experimental data.

• OSTI ID: 22617065
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 124, Issue 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
APPROXIMATIONS
COMPARATIVE EVALUATIONS
DYSPROSIUM COMPOUNDS
ENTROPY
HEAT
MAGNETIC MOMENTS
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
RUTHENIUM
RUTHENIUM COMPOUNDS
RUTHENIUM IONS
SPECIFIC HEAT
SPIN
TEMPERATURE DEPENDENCE
THERMODYNAMICS
TITANATES