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Title: Chemical Reduction of Nd 1.85 Ce 0.15 CuO 4− δ Powders in Supercritical Sodium Ammonia Solutions

Abstract

Nd 1.85 Ce 0.15 CuO 4− δ powders are chemically reduced in supercritical sodium ammonia solutions from room temperature to 350°C. The crystallographic structure of the reduced powders is investigated from Rietveld refinement of X-ray powder diffraction. The atomic positions are maintained constant within experimental errors while temperature factors of all atoms increase significantly after the chemical treatments, especially of Nd/Ce atoms. The ammonothermally reduced Nd 1.85 Ce 0.15 CuO 4− δ powders show diamagnetic below 24 K which is contributed to the lower oxygen content and higher temperature factors of atoms in the treated compound. The ammonothermal method paves a new way to reduce oxides in supercritical solutions near room temperature.

Authors:
 [1];  [2];  [2];  [3];  [4]
  1. Department of Physics and Engineering Physics, Morgan State University, Baltimore, MD 21251, USA
  2. Department of Physics, University of Houston, Houston, TX 77204, USA
  3. State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
  4. Department of Physics and Engineering Physics, Morgan State University, Baltimore, MD 21251, USA, Department of Physics, University of Houston, Houston, TX 77204, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1197736
Grant/Contract Number:  
NA0000720; 2012CB933004
Resource Type:
Published Article
Journal Name:
Advances in Condensed Matter Physics
Additional Journal Information:
Journal Name: Advances in Condensed Matter Physics Journal Volume: 2015; Journal ID: ISSN 1687-8108
Publisher:
Hindawi Publishing Corporation
Country of Publication:
Egypt
Language:
English

Citation Formats

Dias, Yasmin, Wang, Hui, Zhou, Haiqing, Lin, Feng, and Lan, Yucheng. Chemical Reduction of Nd 1.85 Ce 0.15 CuO 4− δ Powders in Supercritical Sodium Ammonia Solutions. Egypt: N. p., 2015. Web. doi:10.1155/2015/873972.
Dias, Yasmin, Wang, Hui, Zhou, Haiqing, Lin, Feng, & Lan, Yucheng. Chemical Reduction of Nd 1.85 Ce 0.15 CuO 4− δ Powders in Supercritical Sodium Ammonia Solutions. Egypt. doi:10.1155/2015/873972.
Dias, Yasmin, Wang, Hui, Zhou, Haiqing, Lin, Feng, and Lan, Yucheng. Thu . "Chemical Reduction of Nd 1.85 Ce 0.15 CuO 4− δ Powders in Supercritical Sodium Ammonia Solutions". Egypt. doi:10.1155/2015/873972.
@article{osti_1197736,
title = {Chemical Reduction of Nd 1.85 Ce 0.15 CuO 4− δ Powders in Supercritical Sodium Ammonia Solutions},
author = {Dias, Yasmin and Wang, Hui and Zhou, Haiqing and Lin, Feng and Lan, Yucheng},
abstractNote = {Nd 1.85 Ce 0.15 CuO 4− δ powders are chemically reduced in supercritical sodium ammonia solutions from room temperature to 350°C. The crystallographic structure of the reduced powders is investigated from Rietveld refinement of X-ray powder diffraction. The atomic positions are maintained constant within experimental errors while temperature factors of all atoms increase significantly after the chemical treatments, especially of Nd/Ce atoms. The ammonothermally reduced Nd 1.85 Ce 0.15 CuO 4− δ powders show diamagnetic below 24 K which is contributed to the lower oxygen content and higher temperature factors of atoms in the treated compound. The ammonothermal method paves a new way to reduce oxides in supercritical solutions near room temperature.},
doi = {10.1155/2015/873972},
journal = {Advances in Condensed Matter Physics},
number = ,
volume = 2015,
place = {Egypt},
year = {2015},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1155/2015/873972

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