UNIGE document Scientific Article
previous document  unige:13127  next document
add to browser collection
Title

Observation of ferrotoroidic domains

Authors
Van Aken, Bas B.
Fiebig, Manfred
Published in Nature. 2007, vol. 449, no. 7163, p. 702 - 705
Abstract Domains are of unparalleled technological importance as they are used for information storage and for electronic, magnetic and optical switches. They are an essential property of any ferroic material. Three forms of ferroic order are widely known: ferromagnetism, a spontaneous magnetization; ferroelectricity, a spontaneous polarization; and ferroelasticity, a spontaneous strain. It is currently debated whether to include an ordered arrangement of magnetic vortices as a fourth form of ferroic order, termed ferrotoroidicity. Although there are reasons to expect this form of order from the point of view of thermodynamics1, a crucial hallmark of the ferroic state—that is, ferrotoroidic domains—has not hitherto been observed. Here ferrotoroidic domains are spatially resolved by optical second harmonic generation in LiCoPO4, where they coexist with independent antiferromagnetic domains. Their space- and time-asymmetric nature relates ferrotoroidics to multiferroics with magnetoelectric phase control2, 3, 4, 5 and to other systems in which space and time asymmetry leads to possibilities for future applications.
Stable URL https://archive-ouverte.unige.ch/unige:13127
Full text
Article (Published version) (583 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://www.nature.com/doifinder/10.1038/nature06139
Identifiers
Structures

185 hits

0 download

Update

Deposited on : 2011-01-07

Export document
Format :
Citation style :