Synchrotron X-Ray Absorption Spectroscopy (XAS) Studies on Structural and Magnetic Properties of T’-Pr2-xCexCuO4 Nanocrystals
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Published:2020-07
Issue:
Volume:855
Page:128-133
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ISSN:1662-9795
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Container-title:Key Engineering Materials
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language:
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Short-container-title:KEM
Author:
Irfanita Resky1ORCID, Putra Putu Eka Dharma1, Triono Bambang1, Baqiya Malik Anjelh1ORCID, Darminto 1, Kamonsuangkasem Krongthong2, Saiyasombat Chatree2
Affiliation:
1. Institut Teknologi Sepuluh Nopember (ITS) Surabaya 2. Universitas Negeri Makassar
Abstract
We have succeeded in synthesizing electron-doped cuprates T’-Pr2-xCexCuO4 (PCCO) with x = 0 and 0.10 nanocrystals prepared by the chemically dissolved method. Reduction annealing of the PCCO samples at 700°C under a flowing argon gas atmosphere has been performed for the removal of excess oxygen in the apical sites. The XRD data showed that the reduction annealing process decreases c-axis length indicating successful removal of the excess oxygen. The bond distortion of PCCO including coordination number and bond distance between the absorber atoms with the nearest neighboring atoms (Cu-O) was investigated by extended x-ray absorption fine structure (EXAFS) using Cu K-edge. The implication of our results is discussed on the basis of tremendous influence of oxygen vacancies on the magnetism of the nanosized T’-cuprates at the normal state.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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