Heat capacity studies on single crystal annealed
- 15 January 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (2) , 1107-1113
- https://doi.org/10.1103/physrevb.31.1107
Abstract
Single crystals of magnetite were grown and annealed under a controlled oxygen atmosphere to produce homogeneous, single phase samples. Heat capacity studies revealed a single, sharp first order heat capacity transition at the Verwey transition ≃121 K, no anomaly at 10 K, no evidence for short range order, and an entropy of transition of Δ=R ln2 per mole of . A model accounting for this numerical result is discussed.
Keywords
This publication has 35 references indexed in Scilit:
- Structure of magnetite (Fe3O4) below the Verwey transition temperatureActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1982
- Structure of Fe3O4 at low temperaturesPhilosophical Magazine Part B, 1980
- Thermodynamics of Fe(II)Fe(III) oxide systems II. Zinc- and cadmium-doped Fe3O4 and crystalline magnetiteThe Journal of Chemical Thermodynamics, 1976
- Magnetite (Fe3O4) Heat capacity and thermodynamic properties from 5 to 350 K, low-temperature transitionThe Journal of Chemical Thermodynamics, 1969
- The specific heat of magnetitePhysics Letters, 1965
- Spin-Wave Contribution to the Heat Capacity of MagnetitePhysical Review B, 1963
- Specific Heat of a Magnetite Crystal at Liquid Helium TemperaturesPhysical Review B, 1956
- Electronic conductivity and transition point of magnetite (“Fe3O4”)Physica, 1941
- THE HEAT CAPACITIES AT LOW TEMPERATURES OF “FERROUS OXIDE,” MAGNETITE AND CUPROUS AND CUPRIC OXIDES1Journal of the American Chemical Society, 1929
- The Heat Capacities of Some Metallic OxidesThe Journal of Physical Chemistry, 1926