THEORETICAL DETERMINATION OF THE MAGNETIC SUSCEPTIBILITY, MAGNETIZATION, SPECIFIC HEAT AND ENTROPY OF MnFePO5

E. Chemseddine, A. El Hajbi*

Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science,
University Chouaïb Doukkali, B.P. 20, 24000 El Jadida, Morocco

* Corresponding author. E-mail : el_hajbi@ucd.ac.ma

Received 01 November 2000

Abstract

The magnetic susceptibility, magnetization, specific heat and entropy at low temperature of MnFePO5 were calculated theoretically using the Heisenberg-Dirac-Van Vleck (HDVV) model. The Mn2+-Fe3+ spin-spin interaction within this compound was shown to be antiferromagnetic.

Keywords : Dimer model; Susceptibility; Specific heat; Magnetization; Entropy.

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