Meso- and nano- magnetoelectricity: a review
The physics of magnetoelectric phenomena, on different scales, is discussed. At macro- and mesoscopic levels, the best performance today is obtained by magnetostrictive-piezoelectric composites. Magnetoelectric coupling is obtained by means of an elastic link. The Carman model for magneto-elasto-electric interaction is presented. Recent experimental results are commented on. A mesoscopic analysis of single-phased magnetoelectric materials is presented. Effective properties of single-crystals and textured polycrystals are mathematically characterized and references to recent experimental reports are given. Some basic questions regarding the atomic-level physics of magnetoelectric multiferroics are discussed. Quantum mechanical conditions for the co-existence of ferroelectric and ferromagnetic structures are investigated. The approach of Spaldin and coworkers, and its computational implementation, are analyzed. The search for a critical size associated with ferroic phenomena is described. Representative contributions are mentioned. Experimental work and computational modeling running at CIMAV and UACh are described.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedad Mexicana de Física
2007
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| Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0035-001X2007000700006 |
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