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  Dielectric properties and magnetostriction of the collinear multiferroic spinel CdV2O4

Giovannetti, G., Stroppa, A., Picozzi, S., Baldomir, D., Pardo, V., Blanco-Canosa, S., et al. (2011). Dielectric properties and magnetostriction of the collinear multiferroic spinel CdV2O4. Physical Review B, 83(6): 060402.

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 Creators:
Giovannetti, G., Author
Stroppa, A., Author
Picozzi, S., Author
Baldomir, D., Author
Pardo, V., Author
Blanco-Canosa, S.1, Author
Rivadulla, F., Author
Jodlauk, S., Author
Niermann, D., Author
Rohrkamp, J., Author
Lorenz, T., Author
Streltsov, S., Author
Khomskii, D. I., Author
Hemberger, J., Author
Affiliations:
1Max Planck Society, ou_persistent13              

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 Abstract: By studying the dielectric properties of the geometrically frustrated spinel CdV(2)O(4), we observe ferroelectricity developing at the transition into the collinear antiferromagnetic ground state. In this multiferroic spinel, ferroelectricity is driven by local exchange striction and not by the more common scenario of spiral magnetism. The experimental findings are corroborated by ab initio calculations of the electric polarization and the underlying spin and orbital order. The results point toward a charge rearrangement due to dimerization, where electronic correlations and the proximity to the insulator-metal transition play an important role.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 581321
ISI: 000287364700002
 Degree: -

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Title: Physical Review B
  Alternative Title : Phys. Rev. B
Source Genre: Journal
 Creator(s):
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Publ. Info: COLLEGE PK : AMER PHYSICAL SOC
Pages: - Volume / Issue: 83 (6) Sequence Number: 060402 Start / End Page: - Identifier: ISSN: 1098-0121