High-temperature neutron diffraction study of La_(2-x)Sr_xCoO_4: Correlation between structure and transport properties

Cristina Tealdi; Chiara Ferrara; Lorenzo Malavasi; Piercarlo Mustarelli; Clemens Ritter; Gaetano Chiodelli; Yuri Antonio Diaz-Fernandez

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High-temperature neutron diffraction study of La_(2-x)Sr_xCoO_4: Correlation between structure and transport properties

机译：La_（2-x）Sr_xCoO_4的高温中子衍射研究：结构与传输性质之间的相关性

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This study focuses on the characterization of the structural and transport properties of the La_(2-x)Sr_xCoO_4 solid solution. The wide temperature range investigated (30-750 °C) has been chosen in view of the potential applications of this class of materials both as catalysts and as cathodes for intermediate temperature solid oxide fuel cells. The trend vs temperature of several structural parameters, as well as of the transport properties, for the La_(2-x)Sr_xCoO_4 series is complex and strongly dependent on composition. A possible correlation between the structural and the transport properties, based on changes in the average oxidation and spin state of the Co ions, is proposed.

机译：这项研究的重点是La_（2-x）Sr_xCoO_4固溶体的结构和输运性质的表征。考虑到这类材料作为中温固体氧化物燃料电池的催化剂和阴极的潜在应用，已选择了广泛的研究温度范围（30-750°C）。 La_（2-x）Sr_xCoO_4系列的几个结构参数以及传输特性的趋势随温度变化是复杂的，并且强烈依赖于组成。提出了基于Co离子平均氧化和自旋态变化的结构和传输性质之间的可能相关性。

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来源
《Physical review》 |2010年第17期|p.174118.1-174118.8|共8页
作者
Cristina Tealdi; Chiara Ferrara; Lorenzo Malavasi; Piercarlo Mustarelli; Clemens Ritter; Gaetano Chiodelli; Yuri Antonio Diaz-Fernandez;
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作者单位

Dipartimento di Chimica Fisica, Universita di Pavia, Viale Taramelli 16, 27100 Pavia, Italy;

Dipartimento di Chimica Fisica, Universita di Pavia, Viale Taramelli 16, 27100 Pavia, Italy;

Dipartimento di Chimica Fisica, Universita di Pavia, Viale Taramelli 16, 27100 Pavia, Italy;

Dipartimento di Chimica Fisica, Universita di Pavia, Viale Taramelli 16, 27100 Pavia, Italy;

Institute Laue-Langevin, Boite Postale 156, F-38042 Grenoble, France;

Sezione di Pavia, IENI/CNR, Viale Taramelli 16, 27100 Pavia, Italy;

Dipartimento di Chimica Generate, Universita di Pavia, Viale Taramelli 12, 27100 Pavia, Italy;

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正文语种 eng
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solid state chemistry;

机译：固态化学;

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1. Structural, magnetic, and transport properties of the single-layered perovskites La_(2-x)Sr_xCoO_4 (x=1.0-1.4) [J] . A. V. Chichev, M. Dlouha, S. Vratislav, Physical review. B, Condensed Matter And Materials Physics . 2006,第13期

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2. Crystal growth, structure, and dielectric properties of layered cobaltates La_(2-x)Sr_xCoO_4 (x = 0.4, 0.5, and 0.6) single crystal [J] . S.T. Dong, N. Sun, B.B. Zhang, Materials Research Bulletin . 2015,第jana期

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3. NMR study of the spin state and magnetic properties of layered perovskite cobalt oxides La_(2-x)Sr_xCoO_4 [J] . Masayuki Itoh, Masami Mori, Yutaka Moritomo, Physica, B. Condensed Matter . 1999,第0期

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4. Correlation between Magnetic Property and Cation Distribution in Z-type Hexagonal Barium-Ferrite (Ba_3Co_(2-x)Fe_(24+x)O_(41)) by Neutron Diffraction [C] . Yukio Takada, Takeshi Tachibana, Takashi Nakagawa, Materials Research Society Symposium . 2003

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High-temperature neutron diffraction study of La_(2-x)Sr_xCoO_4: Correlation between structure and transport properties

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