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Ferroelectricity and antiferroelectricity in CuCrO 2 -type multiferroic semiconductors

Ferroelectricity and antiferroelectricity in CuCrO 2 -type multiferroic semiconductors Abstract Multiferroic semiconductors of the CuCrO2 type are considered. These materials, in the presence of free charge carriers, allow for the existence of opposite domains (in the ferroelectric FE d phase), along with ordinary 180° domains (in the FE phase). The magnetization phase transition in a chiral multiferroic, allowing for piezoelectric effects in an antiferromagnet with a layered triangular structure which result in an incommensurate (helicoidal) spin structure, is phenomenologically described. The behavior of the ferroelectric polarization in the considered phases is characterized. The antiferroelectric is considered a system of parallel layers alternating in chirality sign with oppositely directed polarization vectors. The possibility of antiferroelectric phase transition due to the specific features of the dipole-dipole interaction is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crystallography Reports Springer Journals

Ferroelectricity and antiferroelectricity in CuCrO 2 -type multiferroic semiconductors

Crystallography Reports , Volume 59 (4): 8 – Jul 1, 2014

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References (35)

Publisher
Springer Journals
Copyright
2014 Pleiades Publishing, Inc.
ISSN
1063-7745
eISSN
1562-689X
DOI
10.1134/s1063774514040142
Publisher site
See Article on Publisher Site

Abstract

Abstract Multiferroic semiconductors of the CuCrO2 type are considered. These materials, in the presence of free charge carriers, allow for the existence of opposite domains (in the ferroelectric FE d phase), along with ordinary 180° domains (in the FE phase). The magnetization phase transition in a chiral multiferroic, allowing for piezoelectric effects in an antiferromagnet with a layered triangular structure which result in an incommensurate (helicoidal) spin structure, is phenomenologically described. The behavior of the ferroelectric polarization in the considered phases is characterized. The antiferroelectric is considered a system of parallel layers alternating in chirality sign with oppositely directed polarization vectors. The possibility of antiferroelectric phase transition due to the specific features of the dipole-dipole interaction is discussed.

Journal

Crystallography ReportsSpringer Journals

Published: Jul 1, 2014

Keywords: Crystallography and Scattering Methods

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