Preparation and characterization of magnetic oxides films nanostructured

• Grant number: 13/07909-4
• Support Opportunities: Regular Research Grants
• Duration: July 01, 2013 - June 30, 2015
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Maria Inês Basso Bernardi
• Grantee: Maria Inês Basso Bernardi
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

In this research project we propose the preparation and structural and electrical (transport and magneto-transport) characterization of magnetic nanostructured oxides films deposited specifically from arrays of ZnO and TiO2 doped with transition metals (Co and Fe). These potentially systems, both theoretically and experimentally, present Curie temperatures above room temperature, enabling their applications on spintronic devices. The project will involve the study of systems in two different scales: thin films and nanostructured powders. Our goal is to study the correlation between the structural characteristics, the dynamics of carriers and their magnetic properties, determining the necessary synthesis conditions to achieve truly ferromagnetic materials. In the following we will present with further details the current stage of knowledge about diluted magnetic semiconductors. In the following sections we have specified the overall objective of the research project and we detail the materials and methods to be employed. Finally we present our considerations regarding the relevance of this proposal and the schedule of activities. (AU)

Scientific publications

(7)

(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)

MAMANI, NIKO CHURATA; DA SILVA, RAFAEL TOMAZ; DE ZEVALLOS, ANGELA ORTIZ; CHAVES COTTA, ALEXANDRE ALBERTO; DE ALMEIDA MACEDO, WALDEMAR AUGUSTO; LI, MAXIMO SIU; BASSO BERNARDI, MARIA INES; DORIGUETTO, ANTONIO CARLOS; DE CARVALHO, HUGO BONETTE. On the nature of the room temperature ferromagnetism in nanoparticulate co-doped ZnO thin films prepared by EB-PVD. Journal of Alloys and Compounds, v. 695, p. 2682-2688, FEB 25 2017. (13/07909-4)

LIMA, NAIARA A.; ALENCAR, LORENA D. S.; SIU-LI, MAXIMO; FEITOSA, CARLOS A. C.; MESQUITA, ALEXANDRE; M'PEKO, JEAN-CLAUDE; BERNARDI, MARIA I. B.. NiWO4 powders prepared via polymeric precursor method for application as ceramic luminescent pigments. JOURNAL OF ADVANCED CERAMICS, v. 9, n. 1, p. 55-63, FEB 2020. (13/07296-2, 13/07909-4)

LORENA DARIANE DA SILVA ALENCAR; NAIARA ARANTES LIMA; ALEXANDRE MESQUITA; LUIZ FERNANDO DIAS PROBST; DANIEL CARREIRA BATALHA; MARCELO GONÇALVES ROSMANINHO; HUMBERTO VIEIRA FAJARDO; ROSANA BALZER; MARIA INÊS BASSO BERNARDI. Effect of Different Synthesis Methods on the Textural Properties of Calcium Tungstate (CaWO4) and Its Catalytic Properties in the Toluene Oxidation. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 21, n. 3, 2018-04-16. (13/07296-2, 13/07909-4)

DA SILVA, RAFAEL T.; MESQUITA, ALEXANDRE; DE ZEVALLOS, ANGELA O.; CHIARAMONTE, THALITA; GRATENS, XAVIER; CHITTA, VALMIR A.; MORBEC, JULIANA M.; RAHMAN, GUL; GARCIA-SUAREZ, VICTOR M.; DORIGUETTO, ANTONIO C.; et al. Multifunctional nanostructured Co-doped ZnO: Co spatial distribution and correlated magnetic properties. Physical Chemistry Chemical Physics, v. 20, n. 30, p. 20257-20269, AUG 14 2018. (15/16191-5, 13/07909-4)

ALENCAR, LORENA. D. S.; MESQUITA, ALEXANDRE; FEITOSA, CARLOS A. C.; BALZER, ROSANA; PROBST, LUIZ F. D.; BATALHA, DANIEL C.; ROSMANINHO, MARCELO G.; FAJARDO, HUMBERTO V.; BERNARDI, MARIA I. B.. Preparation, characterization and catalytic application of Barium molybdate (BaMoO4) and Barium tungstate (BaWO4) in the gas-phase oxidation of toluene. CERAMICS INTERNATIONAL, v. 43, n. 5, p. 4462-4469, APR 1 2017. (13/07296-2, 13/07909-4)

RIBEIRO, GUILHERME K.; VICENTE, FABIO S.; BERNARDI, MARIA INES B.; MESQUITA, ALEXANDRE. Short-range structure and photoluminescent properties of the CaTiO3:Pr,La phosphor. Journal of Alloys and Compounds, v. 688, n. A, p. 497-503, DEC 15 2016. (13/12993-4, 13/07909-4)

VALERIO, L. R.; MAMANI, N. C.; DE ZEVALLOS, A. O.; MESQUITA, A.; BERNARDI, M. I. B.; DORIGUETTO, A. C.; DE CARVALHO, H. B.. Preparation and structural-optical characterization of dip-coated nanostructured Co-doped ZnO dilute magnetic oxide thin films. RSC ADVANCES, v. 7, n. 33, p. 20611-20619, 2017. (13/07909-4)