Tetragonal to orthorhombic phase transition in SmFeAsO: A synchrotron powder diffraction investigation

被引：28

作者：

Martinelli, A. ^{[1
]}

Palenzona, A. ^{[1
,2
]}

Ferdeghini, C. ^{[1
]}

Putti, M. ^{[1
,3
]}

Emerich, H. ^{[4
]}

机构：

[1] CNR, Natl Inst Phys Matter, Artificial & Innovat Mat Lab, I-16152 Genoa, Italy

[2] Univ Genoa, Dept Chem & Ind Chem, I-16146 Genoa, Italy

[3] Univ Genoa, Dept Phys, I-16146 Genoa, Italy

[4] ESRF, SNBL, F-38043 Grenoble, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 477卷 / 1-2期

关键词：

High-T-C superconductors; Crystal structure; Phase transitions; Synchrotron radiation;

D O I：

10.1016/j.jallcom.2008.10.153

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystal structure of SmFeAsO was investigated by means of Rietveld refinement of high-resolution synchrotron powder diffraction data collected at 300 K and 100 K. The compound crystallizes in the tetragonal P4/nmm space group at 300 K and in the orthorhombic Cmma space group at 100 K; attempts to refine the low temperature data in the monoclinic P112/n space group diverged. On the basis of both resistive and magnetic analyses the tetragonal to orthorhombic phase transition may be located at T similar to 140 K. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：L21 / L23

页数：3

共 13 条

[1]

CARLO JP, CONDMAT08052186V1

[2] Magnetic order close to superconductivity in the iron-based layered LaO1-xFxFeAs systems [J].

de la Cruz, Clarina ;

Huang, Q. ;

Lynn, J. W. ;

Li, Jiying ;

Ratcliff, W., II ;

Zarestky, J. L. ;

Mook, H. A. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. ;

Dai, Pengcheng .

NATURE, 2008, 453 (7197) :899-902

[3]

DONG J, CONDMAT08033426V1

[4] The effect of internal pressure on the tetragonal to monoclinic structural phase transition in ReOFeAs: the case of NdOFeAs [J].

Fratini, Michela ;

Caivano, Rocchina ;

Puri, Alessandro ;

Ricci, Alessandro ;

Ren, Zhi-An ;

Dong, Xiao-Li ;

Yang, Jie ;

Lu, Wei ;

Zhao, Zhong-Xian ;

Barba, Luisa ;

Arrighetti, Gianmichele ;

Polentarutti, Maurizio ;

Bianconi, Antonio .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2008, 21 (09)

[5] SIGNIFICANCE TESTS ON CRYSTALLOGRAPHIC R FACTOR [J].

HAMILTON, WC .

ACTA CRYSTALLOGRAPHICA, 1965, 18 :502-&

[6] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K [J].

Kamihara, Yoichi ;

Watanabe, Takumi ;

Hirano, Masahiro ;

Hosono, Hideo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3296-+

[7]

KITAO S, CONDMAT08050041

[8] Commensurate spin density wave in LaFeAsO:: A local probe study [J].

Klauss, H. -H. ;

Luetkens, H. ;

Klingeler, R. ;

Hess, C. ;

Litterst, F. J. ;

Kraken, M. ;

Korshunov, M. M. ;

Eremin, I. ;

Drechsler, S. -L. ;

Khasanov, R. ;

Amato, A. ;

Hamann-Borrero, J. ;

Leps, N. ;

Kondrat, A. ;

Behr, G. ;

Werner, J. ;

Buechner, B. .

PHYSICAL REVIEW LETTERS, 2008, 101 (07)

[9]

MARGADONNA S, CONDMAT08063962V1

[10] Synthesis, crystal structure, microstructure, transport and magnetic properties of SmFeAsO and SmFeAs(O0.93F0.07) [J].

Martinelli, A. ;

Ferretti, M. ;

Manfrinetti, P. ;

Palenzona, A. ;

Tropeano, M. ;

Cimberle, M. R. ;

Ferdeghini, C. ;

Valle, R. ;

Bernini, C. ;

Putti, M. ;

Siri, A. S. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2008, 21 (09)

← 1 2 →