Giant dielectric response with an electric field in charge-ordered La 1-xCaxMnO3 compounds

Ying Hou, Yiping Yao, Genqiang Zhang, Qingxuan Yu, Xiaoguang Li

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The effect of electric fields on the dielectric properties of charge-ordered La1-xCaxMnO3 compounds is reported. A low-frequency giant dielectric tunability can be obtained under a bias field as low as of the order of ∼10 V/cm. The analyses suggest that the giant dielectric tunability under low bias fields could be derived from the extrinsic contributions such as intergrains and Schottky barriers. In addition, the tunability strongly depends on the stability of the charge-ordered state of the compounds. These findings make it possible to achieve a high tunability of nonferroelectrics in low electric fields, indicating that it is promising for potential applications, such as tunable devices.

Original languageEnglish (US)
Pages (from-to)1366-1369
Number of pages4
JournalJournal of the American Ceramic Society
Volume92
Issue number6
DOIs
StatePublished - Jun 1 2009

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Electric fields
Dielectric properties

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Hou, Ying ; Yao, Yiping ; Zhang, Genqiang ; Yu, Qingxuan ; Li, Xiaoguang. / Giant dielectric response with an electric field in charge-ordered La 1-xCaxMnO3 compounds. In: Journal of the American Ceramic Society. 2009 ; Vol. 92, No. 6. pp. 1366-1369.
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Giant dielectric response with an electric field in charge-ordered La 1-xCaxMnO3 compounds. / Hou, Ying; Yao, Yiping; Zhang, Genqiang; Yu, Qingxuan; Li, Xiaoguang.

In: Journal of the American Ceramic Society, Vol. 92, No. 6, 01.06.2009, p. 1366-1369.

Research output: Contribution to journalArticle

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AU - Hou, Ying

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AB - The effect of electric fields on the dielectric properties of charge-ordered La1-xCaxMnO3 compounds is reported. A low-frequency giant dielectric tunability can be obtained under a bias field as low as of the order of ∼10 V/cm. The analyses suggest that the giant dielectric tunability under low bias fields could be derived from the extrinsic contributions such as intergrains and Schottky barriers. In addition, the tunability strongly depends on the stability of the charge-ordered state of the compounds. These findings make it possible to achieve a high tunability of nonferroelectrics in low electric fields, indicating that it is promising for potential applications, such as tunable devices.

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