Electrical transport in nanostructured RNiO3 compounds

• Grant number: 16/03575-2
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2017
• End date: July 31, 2018
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Márcia Tsuyama Escote
• Grantee: Márcia Tsuyama Escote
• Host Institution: Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas (CECS). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil

Abstract

Nanostructured RNiO3 (R rare Earth) compounds are going to be studied in the work. Samples will be produced using stoichiometric R-Ni-O solutions to synthesize thin films, nanotubes, nanofibers or microfibers of these oxides. It will be used different techniques like spin-coating to produce films and pore-filling technique, electrospinning and hydrothermal synthesis to produce the nanostructured samples. X ray diffraction and electron microscopy will be used to characterize structural characterization and microstructure features. Electrical transport and magnetization will be evaluated by means of electrical resistivity as a function of temperature (time, current (I) and I x voltage (V)) and magnetization versus temperature or the applied magnetic field. With the equipment asked, the transport properties of the RNiO3 nanostructured can be deeply studied. Also, it will be possible to verify the influence of the dimension on the physical properties of these oxides. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MEDINA, MIDILANE S.; ZENATTI, ALESSANDRA; ESCOTE, MARCIA T.. Fast Synthesis of Co3O4 by Microwave-Assisted Hydrothermal Treatment. Journal of Nanomaterials, v. 2020, JAN 4 2020. (16/03575-2)

MEDINA, M. S.; RAMIREZ, B. N.; FERREIRA, P. M. G. L.; HUANG, H. P.; ZENATTI, A.; LANFREDI, A. J. C.; ESCOTE, M. T.. Low oxygen pressure synthesis of NdNiO3-delta nanowires by electrospinning. NANO EXPRESS, v. 1, n. 1, p. 8-pg., 2020-06-01. (16/03575-2)

MEDINA, M. S.; BERNARDI, J. C.; ZENATTI, A.; ESCOTE, M. T.. A new approach to obtain calcium cobalt oxide by microwave-assisted hydrothermal synthesis. CERAMICS INTERNATIONAL, v. 46, n. 2, p. 1596-1600, FEB 1 2020. (16/03575-2)