Synthesis and Characterization of BaFe2As2 Single Crystals Grown by In-flux Technique

Author(s):Show less -

Garitezi, T. M. ^[1] ; Adriano, C. ^[1] ; Rosa, P. F. S. ^[1] ; Bittar, E. M. ^{[2, 1]} ; Bufaical, L. ^{[3, 1]} ; de Almeida, R. L. ^[1] ; Granado, E. ^{[1, 4]} ; Grant, T. ^[5] ; Fisk, Z. ^[5] ; Avila, M. A. ^[6] ; Ribeiro, R. A. ^[6] ; Kuhns, P. L. ^[7] ; Reyes, A. P. ^[7] ; Urbano, R. R. ^{[7, 1]} ; Pagliuso, P. G. ^{[5, 1]}

Affiliation

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Sao Paulo - Brazil

^[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro - Brazil

^[3] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go - Brazil

^[4] Lab Nacl Luz Sincrotron, BR-13083970 Sao Paulo - Brazil

^[5] Univ Calif Irvine, Irvine, CA 92697 - USA

^[6] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Sao Paulo - Brazil

^[7] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 - USA

• Document type: Journal article
• Source: Brazilian Journal of Physics; v. 43, n. 4, p. 223-229, AUG 2013.
• Web of Science Citations: 12

Abstract

We report a detailed characterization of BaFe2As2 single crystals grown by a metallic In-flux technique, an alternative to well-established growth routes using FeAs self- or Sn-flux. Electrical resistivity, magnetic susceptibility, nuclear magnetic resonance, and energy dispersive spectroscopy measurements showed no evidence of flux incorporation. More importantly, our results demonstrate that BaFe2As2 single crystals grown by In-flux have extremely high quality. To explore the efficiency of the In-flux growth method, we have also prepared nearly optimally doped superconducting samples of Ba(Fe1 -x M (x) )(2)As-2 (M = Co, Cu, Ni, and Ru). Among other interesting features, this alternative chemical substitution method has led to enhancement of the maximum T (c) for most dopings. (AU)

• FAPESP's process: 09/09247-3 - Investigation of pressure induced ordered states in novel complex materials.
• Grantee: Cris Adriano
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 11/12292-0 - Magnetic and Transport Properties Study on New Materials
• Grantee: Thales Macedo Garitezi
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 12/04870-7 - Studies of novel complex and advanced materials
• Grantee: Pascoal Jose Giglio Pagliuso
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 10/11949-3 - Electron spin resonance (ESR) in superconducting Fe-based pnictides
• Grantee: Priscila Ferrari Silveira Rosa
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 11/19924-2 - Study and development of advanced novel materials: electronic, magnetic and nanostructured: an interdisciplinary approach
• Grantee: Carlos Rettori
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 11/01564-0 - Materials sciences on complex and advanced systems
• Grantee: Pascoal Jose Giglio Pagliuso
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 11/23795-3 - Looking for new and better thermoelectrics
• Grantee: Raquel de Almeida Ribeiro
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/23650-5 - Investigation of band structure and Fermi surface in advanced complex materials studied by angle-resolved photoemission spectroscopy
• Grantee: Cris Adriano
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 06/60440-0 - Study of strongly correlated systems in extreme conditions
• Grantee: Carlos Rettori
• Support Opportunities: Research Projects - Thematic Grants