Unusual giant magnetostriction in the ferrimagnet Gd$_{2/3}$Ca$_{1/3}$MnO$_3$

V. F. Correa; N. Haberkorn; G. Nieva; D. J. Garcia; B. Alascio

doi:10.1209/0295-5075/98/37003

paper

Unusual giant magnetostriction in the ferrimagnet Gd $_{2/3}$ Ca $_{1/3}$ MnO $_{3}$

arXiv:1109.0259 · doi:10.1209/0295-5075/98/37003

Abstract

We report an unusual giant linear magnetostrictive effect in the ferrimagnet Gd $_{2/3}$ Ca $_{1/3}$ MnO $_{3}$ ( $T_{c} \approx$ 80 K). Remarkably, the magnetostriction, negative at high temperature ( $T \approx T_{c}$ ), becomes positive below 15 K when the magnetization of the Gd sublattice overcomes the magnetization of the Mn sublattice. A rather simple model where the magnetic energy competes against the elastic energy gives a good account of the observed results and confirms that Gd plays a crucial role in this unusual observation. Unlike previous works in manganites where only striction associated with 3 $d$ Mn orbitals is considered, our results show that the lanthanide 4 $f$ orbitals related striction can be very important too and it cannot be disregarded.

6 pages, 3 figures

Unusual giant magnetostriction in the ferrimagnet Gd $_{2/3}$ Ca $_{1/3}$ MnO $_{3}$

Abstract

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Unusual giant magnetostriction in the ferrimagnet Gd2/3​Ca1/3​MnO3​

Abstract

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Cited by in corpus (2)

Unusual giant magnetostriction in the ferrimagnet Gd $_{2/3}$ Ca $_{1/3}$ MnO $_{3}$