Eur. Phys. J. B 4, 441-445 (1998)
https://doi.org/10.1007/s100510050401

Magneto-phonon contribution into the Young's modulus of gadolinium

¹ Ural State Technical University, UPI, Physics Department, 620002 Ekateringburg, Russia
² M.V. Lomonosov Moscow State University, Physics Department, 119899 Moscow, Russia

Corresponding author: ^a pav@alfa.e-burg.ru

Received: 9 April 1996
Revised: 26 January 1998
Accepted: 26 February 1998
Published online: 15 August 1998

Abstract

Theoretical and experimental investigation has been made of the magnetic contribution to the Young's modulus of rare earth ferromagnet gadolinium. Experimental study includes measurements of the Young's modulus as a function of temperature, magnetic field and magnetization of gadolinium. Theoretical analysis is based on the account of phonon anharmonicity which gives rise to the dependence of Debye temperature on magnetization. Spontaneous magnetic contribution to the Young's modulus of Gd is found to be proportional to the squared magnetization of the metal. The magnetic contribution is also induced by magnetizing magnet due to the paraprocess.