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Superconductivity in (Nb1-xZrx)B solid solutions

Grant number: 14/12401-2
Support type:Scholarships in Brazil - Master
Effective date (Start): August 01, 2014
Effective date (End): July 31, 2016
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Renato de Figueiredo Jardim
Grantee:Fábio Santos Alves Abud
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID


It is our aim is to continue the preliminary study described in a research project where superconductivity around 11 K was observed in the system (Nb, Zr) B. For this, we intend to produce a series of samples with stoichiometries (NB1-xZrx) B; x = 0, 0:05, 0:10, 0:15, 0:20, 0:25 and 0:30. These samples will be characterized by X-ray diffraction (XRD), electrical resistivity R (T), dc magnetization M (T) and specific heat Cp (T) in a wide range of temperature between 1.8 and 50 K. Eventually characterizations of R (T), M (T) and Cp (T) will be performed in the presence of applied magnetic fields up to 9 T (90 kOe).

Matéria(s) publicada(s) na Agência FAPESP sobre a bolsa:
Research dispels misconception of superconductivity in niobium compound  

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)
GUEDES, E. B.; ABUD, E.; MARTINS, H. P.; ABBATE, M.; JARDIM, R. F.; MOSSANEK, R. J. O. Role of Ti-Ru interaction in SrTi0.5Ru0.5O3: Physical properties, x-ray spectroscopy, and cluster model calculations. Physical Review B, v. 100, n. 7 AUG 15 2019. Web of Science Citations: 0.
ABUD, F.; CORREA, L. E.; SOUZA FILHO, I. R.; MACHADO, A. J. S.; TORIKACHVILI, M. S.; JARDIM, R. F. Absence of superconductivity in NbB. PHYSICAL REVIEW MATERIALS, v. 1, n. 4 SEP 8 2017. Web of Science Citations: 2.
GUEDES, E. B.; ABBATE, M.; ABUD, F.; JARDIM, R. F.; VICENTIN, F. C.; MOSSANEK, R. J. O. Spectroscopy and electronic structure of Sr2YRuO6 and Sr2YRu0.75Ir0.25O6. Physical Review B, v. 94, n. 4 JUL 11 2016. Web of Science Citations: 0.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ABUD, Fábio Santos Alves. Superconductivity in (Nb1-xZrx)B solid solutions. 2016. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Física São Paulo.

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