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Fundamental research in superconductivity and magnetism - systems potentially useful for aplications: advanced oxides and superconductors patterned with artificial structures

Grant number: 07/08072-0
Support type:Research Projects - Thematic Grants
Duration: October 01, 2008 - March 31, 2013
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Wilson Aires Ortiz
Grantee:Wilson Aires Ortiz
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Assoc. researchers: Camilla dos Santos Zanatta ; Edson Sardella ; Jose Humberto Dias da Silva ; José Varalda ; Paulo Noronha Lisboa Filho
Associated grant(s):12/10487-1 - International Conference on materials and mechanisms of superconductivity (M2S 2012), AR.EXT
10/01517-9 - Visit of Prof. Alejandro V. Silhanek to the laboratories of GSM-DF/UFSCar, AV.EXT
Associated scholarship(s):12/14186-6 - Study of the vortex lattice of mesoscopic d-Wave superconductors, BP.IC
10/13450-6 - Nanoscopic phases in magnetic manganites, BP.MS
09/10527-0 - Effects of artificial structures of defects on the magnetic response of superconducting films: first penetrations; thermoremanence; computational simulations and granularity, BP.PD
+ associated scholarships 09/10818-5 - Interaction of Vortex Matter with structures of uncorrelated defects - harmonic susceptibility, magneto-optical imaging and Micro-Hall sensing, BP.DR
09/03197-4 - Nanostructured magnetic oxide materials, BP.MS
09/08686-3 - Chemical analyses of metal content in magnetic and superconducting oxide materials, BP.IC
08/10430-4 - Deposition process optimization of TiO2:Mn films using RF magnetron sputtering, BP.DR
08/00090-1 - Nucleation of vortex matter - global and local study using magnetometry, micro-Hall probe and magneto-optical imaging, BP.PD - associated scholarships


The present thematic project is composed by eight subprojects, devoted to fundamental research on physical systems - magnetic and/or superconducting - exhibiting potentialities for applications. This is the case of certain oxides, called advanced, with unusual magnetic response, such as manganites, certain spinels and the superconducting cuprates. Also included are proposals involving superconducting systems patterned with artificial structures of defects, with which one aims at controlling vortex dynamics, and thus, the critical current, which has important consequences for prospective applications. A study on films and multilayers of TiO2 with Co or Mn is also proposed. Regarding a full comprehension of the physics governing the prominent properties of these systems, a number of open questions still remain, evidencing the importance of additional fundamental research. The Thematic Project will be developed through an existing collaboration among researchers from UFSCar and UNESP-Bauru. More specifically, the collaboration involves Grupo de Supercondutividade e Magnetismo, Physics Department, UFSCar and UNESP's researchers Paulo Noronha Lisboa Filho, Edson Sardella e José Humberto Dias da Silva, from the Physics Department, Faculty of Sciences, who will act as subproject coordinators. There are also some important external collaborations, with Brazilian and foreign groups. Besides, an already existent, significant research infrastructure will be available for development of the project, involving facilities for production and characterization - structural and microstructural - of specimens, which will be studied through a variety of techniques, such as magnetization, AC-susceptibility and harmonic analysis, local magnetic field sensing, magneto-transport, specific heat, thermal transport, magneto-optical imaging. For the sake of clarity, the eight subprojects composing this Thematic Project were grouped according to similarities among the problems they embrace: Group 1 treats the magnetic response of superconducting systems with structures of defects, its projects being: (i) Interaction of Vortex Matter with large, non-correlated defects; (ii) Interaction of Vortex Matter with columnar defects; (iii) Structured mesoscopic systems; (iv) Thermomagnetic instabilities and flux avalanches in MgB2 and Nb; (v) Studies of the Vortex Lattice in Nanostructured Superconductors. Group 2, focused on the development of magnetic and superconducting materials in nanoscopic scale, includes the following topics: (vi) Magnetic response of samples of nanoscopic scale with structural inhomogeneities; (vii) Study of the magnetic phase diagram and substitucional effects in magnetic systems with perovskite and spinel structures. Group 3 consists of a single subproject, in which we propose studies leading to optimize preparation conditions, using the RF magnetron sputtering technique, of films and multilayers of TiO2:MT, where MT is a transition metal: (viii) Preparation of films and multilayers of TiO2:MT (MT = Co or Mn). (AU)

Scientific publications (14)
(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)
LEITE GUSMAO PINHEIRO, LINCOLN BRUM; MOTTA, MAYCON; COLAUTO, FABIAN; JOHANSEN, TOM H.; BELLINGERI, EMILIO; BERNINI, CRISTINA; FERDEGHINI, CARLO; ORTIZ, WILSON A. Imaging Flux Avalanches in V3Si Superconducting Thin Films. IEEE Transactions on Applied Superconductivity, v. 29, n. 5 AUG 2019. Web of Science Citations: 0.
DUARTE, E. C. S.; SARDELLA, E.; ORTIZ, W. A.; ZADOROSNY, R. Dynamics and heat diffusion of Abrikosov's vortex-antivortex pairs during an annihilation process. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 29, n. 40 OCT 11 2017. Web of Science Citations: 5.
BRISBOIS, J.; ADAMI, O. -A.; AVILA, J. I.; MOTTA, M.; ORTIZ, W. A.; NGUYEN, N. D.; VANDERBEMDEN, P.; VANDERHEYDEN, B.; KRAMER, R. B. G.; SILHANEK, A. V. Magnetic flux penetration in Nb superconducting films with lithographically defined microindentations. Physical Review B, v. 93, n. 5 FEB 23 2016. Web of Science Citations: 18.
COLAUTO, F.; MOTTA, M.; PALAU, A.; BLAMIRE, M. G.; JOHANSEN, T. H.; ORTIZ, W. A. First Observation of Flux Avalanches in a-MoSi Superconducting Thin Films. IEEE Transactions on Applied Superconductivity, v. 25, n. 3 JUN 2015. Web of Science Citations: 8.
BRISBOIS, J.; VANDERHEYDEN, B.; COLAUTO, F.; MOTTA, M.; ORTIZ, W. A.; FRITZSCHE, J.; NGUYEN, N. D.; HACKENS, B.; ADAMI, O-A; SILHANEK, A. V. Classical analogy for the deflection of flux avalanches by a metallic layer. NEW JOURNAL OF PHYSICS, v. 16, OCT 7 2014. Web of Science Citations: 10.
FERREIRA, RAFAEL A.; DOS SANTOS, MARIA ELENICE; MORILLA-SANTOS, CASSIO; LEBULLENGER, RONAN; PENA, OCTAVIO; LISBOA-FILHO, PAULO NORONHA. Effect of Eu substitution on the crystallographic and magnetic properties of the BiMn2O5 oxide obtained by urea combustion. CERAMICS INTERNATIONAL, v. 40, n. 8, B, p. 13643-13648, SEP 2014. Web of Science Citations: 2.
ZADOROSNY, R.; DUARTE, E. C. S.; SARDELLA, E.; ORTIZ, W. A. Vortex-antivortex annihilation in mesoscopic superconductors with a central pinning center. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, v. 503, p. 94-97, AUG 15 2014. Web of Science Citations: 4.
DOS SANTOS, MARIA ELENICE; CASTRO, ALICIA; MARTINEZ, INMACULADA; LISBOA-FILHO, PAULO NORONHA; PENA, OCTAVIO. Mechanosynthesis of the multiferroic cubic spinel Co2MnO4: Influence of the calcination temperature. CERAMICS INTERNATIONAL, v. 40, n. 5, p. 7185-7193, JUN 2014. Web of Science Citations: 5.
MOTTA, M.; COLAUTO, F.; VESTGARDEN, J. I.; FRITZSCHE, J.; TIMMERMANS, M.; CUPPENS, J.; ATTANASIO, C.; CIRILLO, C.; MOSHCHALKOV, V. V.; DE VONDEL, J. VAN; JOHANSEN, T. H.; ORTIZ, W. A.; SILHANEK, A. V. Controllable morphology of flux avalanches in microstructured superconductors. Physical Review B, v. 89, n. 13 APR 14 2014. Web of Science Citations: 20.
DOS SANTOS, M. E.; LISBOA-FILHO, P. N.; GOUTTEFANGEAS, F.; PENA, O. Intrinsic magnetic properties of BixCo2-xMnO4 spinels obtained by short-time etching. Journal of Magnetism and Magnetic Materials, v. 339, p. 157-162, AUG 2013. Web of Science Citations: 2.
DOS SANTOS, MARIA ELENICE; FERREIRA, RAFAEL APARECIDO; LISBOA-FILHO, PAULO NORONHA; PENA, OCTAVIO. Cation distribution and magnetic characterization of the multiferroic cobalt manganese Co2MnO4 spinel doped with bismuth. Journal of Magnetism and Magnetic Materials, v. 329, p. 53-58, MAR 2013. Web of Science Citations: 12.
PEREIRA, ANDRE L. J.; GRACIA, LOURDES; BELTRAN, ARMANDO; LISBOA-FILHO, PAULO N.; DA SILVA, JOSE H. D.; ANDRES, JUAN. Structural and Electronic Effects of Incorporating Mn in TiO2 Films Grown by Sputtering: Anatase versus Rutile. Journal of Physical Chemistry C, v. 116, n. 15, p. 8753-8762, APR 19 2012. Web of Science Citations: 24.
MORILLA-SANTOS, C.; ARRUDA, L. B.; SILVA, C. A.; LISBOA-FILHO, P. N. Magnetic interactions and spin-reversal mechanism in ErMn1-xCoxO3-delta samples. Journal of Electroceramics, v. 27, n. 3-4, p. 215-221, DEC 2011. Web of Science Citations: 1.

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