|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Multiferroicity in the geometrically frustrated FeTe2O5Cl | | M. Pregelj
; A. Zorko
; O. Zaharko
; P. Jeglič
; Z. Kutnjak
; Z. Jagličić
; S. Jazbec
; H. Luetkens
; A. D. Hillier
; H. Berger
; D. Arčon
; | | Date: |
9 Oct 2013 | | Abstract: | The layered FeTe2O5Cl compound was studied by specic-heat, muon spin
relaxation, nuclear magnetic resonance, dielectric, as well as neutron and
synchrotron x-ray diffraction measurements, and the results were compared to
isostructural FeTe2O5Br. We find that the low-temperature ordered state,
similarly as in FeTe2O5Br, is multiferroic - the elliptical amplitude-modulated
magnetic cycloid and the net electric polarization simultaneously develop below
11 K. However, compared to FeTe2O5Br, the elliptical envelop rotates by 75(4)
deg and the electric polarization is much more sensitive to the applied
electric field. We propose the geometric frustration as the most likely
mechanism to enhance the effects of otherwise subtle magnetic anisotropy of the
Fe3+ (S =5/2) ion and is rather responsible for the observed differences
between the two systems. Finally, x-ray diffraction results imply that, on the
microscopic scale, the magnetoelectric coupling is driven by shifts of the O1
atoms, as a response to the polarization of the Te4+ lone-pair electrons
involved in the Fe-O-Te-O-Fe exchange bridges. | | Source: | arXiv, 1310.2373 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER