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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of strain, defects and crystal phase transition in mechanically milled nanocrystalline In2O3 powder

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Author(s):
Carvalho, M. H. [1] ; Rizzo Piton, M. [1] ; Lemine, O. M. [2] ; Bououdina, M. [3] ; Galeti, H. V. A. [4] ; Souto, S. [5] ; Pereira, E. C. [6] ; Galvao Gobato, Y. [1] ; de Oliveira, A. J. A. [1]
Total Authors: 9
Affiliation:
[1] Univ Fed Sao Carlos UFSCar, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil
[2] Al Imam Mohammad Ibn Saud Islamic Univ IMISU, Coll Sci, Phys Dept, POB 90950, Riyadh 11623 - Saudi Arabia
[3] Bahrain Univ, Phys Dept, Zallaq - Bahrain
[4] Univ Fed Sao Carlos, Dept Engn Eletr, BR-13565905 Sao Carlos, SP - Brazil
[5] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Dept Ciencias Basicas, BR-13635900 Pirassununga, SP - Brazil
[6] Univ Fed Sao Carlos UFSCar, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: MATERIALS RESEARCH EXPRESS; v. 6, n. 2 FEB 2019.
Web of Science Citations: 1
Abstract

In this paper, we investigated structural, optical and magnetic properties of mechanically milled In2O3 nanoparticles in the cubic bixbyite phase. It was observed that mechanical milling induces an important increase in the density of defects, strain and hexagonal phase transition for cubic In2O3 nanoparticles. Remarkably, room temperature ferromagnetism was observed after mechanical milling. The hexagonal phase of In2O3 nanoparticles (H-In2O3) which is usually obtained in a high-temperature and pressure environment was clearly observed for the sample submitted to higher milling times which considerably affects the magnetic and optical properties. The physical origin of the FM order of mechanically milled In2O3 nanoparticles has been ascribed to the increase in the density of defects and strain. (AU)

FAPESP's process: 09/54082-2 - Acquisition of a vibranting sample magnetometer coupled with a superconducting quantum interference device assensor (Squid-VSM) with cryogenic closed cycle
Grantee:Ernesto Chaves Pereira de Souza
Support type: Multi-user Equipment Program
FAPESP's process: 17/24995-2 - Magnetism in multifunctional materials
Grantee:Adilson Jesus Aparecido de Oliveira
Support type: Regular Research Grants
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC