Electrical and Thermal Conductivities of Some Sulphate Compounds

• Authors: M. Abdel-Kader , M. Mosaad , S. Olofa , M. Abdel-Ati , A. El-Shawarby
• Languages of publication: EN

Abstracts

EN

The electrical conductivity σ and the thermal conductivity λ were investigated at varying temperature (40 < T < 120°C) for two sulphate compounds, anhydrous mercury(II) sulphate HgSO_{4} and cerous(III) sulphate Ce_{2}(SO_{4})_{3}·H_{2}O. It seems likely that each of the two sulphate salts undergoes structural phase transition around 90°C. The differential thermal analysis thermogram was carried out as an aid for confirming of the observed phase transitions. The mechanism of the heat transfer is mainly due to phonons. Interpretation of the obtained data was given on the basis of the reorientational motion of the SO_{4}‾ ‾ ions.

Keywords

EN

72.15.Jf

Discipline

• 72.15.Jf: Thermoelectric and thermomagnetic effects

• Journal: Acta Physica Polonica A
• Year: 1993
• Volume: 83
• Issue: 2
• Pages: 187-194

Dates

published

1993-02

received

1992-05-12

(unknown)

1992-10-06

Contributors

author

M. Abdel-Kader

• Physics Department, Faculty of Science, Cairo University, Giza, Egypt

author

M. Mosaad

• Physics Department, Faculty of Education, Kafr El-Sheik, Egypt

author

S. Olofa

• Physics Department, Faculty of Science, Tanta University, Tanta, Egypt

author

M. Abdel-Ati

• Physics Department, Faculty of Science, Tanta University, Tanta, Egypt

author

A. El-Shawarby

• Physics Department, Faculty of Science, Zagazig University, Benha, Egypt

Identifiers

DOI

10.12693/APhysPolA.83.187