CaBaCo4O7: A ferrimagnetic pyroelectric

doi:10.1103/PhysRevB.90.045129

2014-07-23

DOI：10.1103/PhysRevB.90.045129

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摘要

En 中文

Magnetoelectric coupling in pyroelectric CaBaCo4O7 is investigated using ab intio calculations and Landau theory. The former shows that exchange striction is strong enough to produce a giant change in electric polarization upon ferrimagnetic ordering, comparable to the experimentally determined value of similar to 17mC/m(2). Furthermore, Landau theory demonstrates that magnetoelastic coupling in CaBaCo4O7 is responsible for the strong magnetoelectric coupling appearing close to the magnetic phase transition.

Keyword:

POLARIZATION

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期刊

Physical Review B

IF:

3.7

论文数:

15.4W

被引数:

41.0W

机构

university of oxford

学者数:

9.8W

论文数: 8.6W

被引数: 137

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