Abstract
Experimental research on giant magnetostrictive effects in magnetic oxides is reviewed. Particular attention is paid to manganates, cobaltates, high-temperature superconductors and spin-Peierls material CuGeO 3. The magnetostrictive effects are analysed in terms of recently developed theoretical models. It is shown that strong electron–phonon coupling is responsible for intrinsic giant magnetostriction in most of the oxides presented. In the case of high-temperature superconductors the giant forced magnetostriction is due to extrinsic effects related to flux-pinning and consequently to lattice defects.
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