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Spiral-spin-driven ferroelectricity in a multiferroic delafossite AgFeO2.

Abstract:

We have performed dielectric measurements and neutron diffraction experiments on the delafossite AgFeO2. A ferroelectric polarization P is approximately equal to 300 μC/m2 was observed in a powder sample, below 9 K. The neutron diffraction experiment demonstrated successive magnetostructural phase transitions at T(N1)=15 K and T(N2)=9 K. The magnetic structure for 9 K≤T≤15 K is a spin-density wave with a temperature dependent incommensurate modulation k=(-1, q, 1/2), q is approximately equal ...

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Publication status:
Published

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Authors


Khalyavin, DD More by this author
Tsujimoto, Y More by this author
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Journal:
Physical review letters
Volume:
109
Issue:
9
Pages:
097203
Publication date:
2012-08-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:b11c3122-fc22-4cc3-a821-184840de1628
Source identifiers:
350900
Local pid:
pubs:350900
Language:
English

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