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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.)

Sol-gel synthesis of triclinic CoV2O6 polycrystals

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Author(s):
von Dreifus, Driele [1, 2] ; Pereira, Rodrigo [3] ; Rodrigues, Ariano D. [2] ; Pereira, Ernesto C. [1] ; de Oliveira, Adilson J. A. [2]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos UFSCar, Dept Quim, Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos UFSCar, Dept Fis, Sao Carlos, SP - Brazil
[3] Inst Fed Educ Ciencia & Tecnol Mato Grosso IFMT, Sao Vicente, MT - Brazil
Total Affiliations: 3
Document type: Journal article
Source: CERAMICS INTERNATIONAL; v. 44, n. 16, p. 19397-19401, NOV 2018.
Web of Science Citations: 0
Abstract

In this paper, a new chemical route synthesis for gamma-CoV2O6 is proposed. Based on the CoO-V2O5 phase diagram a study of temperature and calcination times for pure gamma-CoV2O6 obtainment is described. X-ray diffraction and Raman spectroscopy experiments revealed the triclinic crystals structure belonging to P-1 spatial group. FEG-SEM images showed that the resulting grains present elongated shape. Rietveld analysis revealed a crystalline anisotropy with preferential crystallographic orientation in the {[}2 0 - 1] and {[}1 3 0] planes. The calculated mean crystallite size evidences that the crystallite dimensions are significantly different in the parallel and perpendicular directions. The magnetic properties measurements evidenced an antiferromagnetic transition at 7 K and a detailed view of the magnetization isotherms confirmed a noticeable step-like behavior below T-N, characteristic of field-induced transitions. (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: 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