Published December 2003
| Version v1
Journal article
Anisotropy in MgB2
Creators
- 1. Universidade Estadual de Campinas, SP (Brazil). Inst. de Fisica Gleb Wataghin
- 2. Sao Paulo Univ., Sao Carlos, SP (Brazil). Grupo de Materiais e Dispositivos
Description
The first direct measurement of an anisotropic superconducting property in MgB2 was achieved for the bulk nucleation field Hc2, in a sample of aligned crystallites. It was found a ratio γ(T) = Hc2ab/Hc2c 1:6-1:9; for T varying from 32 K to 26K, between H applied parallel to the ab plane, and along the c direction. The anisotropy of the induced critical current density was evaluated through the Bean model to be Jcab/Jcc ∼ 1:5. We present here a brief review of these studies in connection with current results found in the literature. (author)
Additional details
Identifiers
Publishing Information
- Journal Title
- Brazilian Journal of Physics
- Journal Volume
- 33
- Journal Issue
- 4
- Journal Page Range
- p. 709-712
- ISSN
- 0103-9733
- CODEN
- BJPHE6
Conference
- Title
- International workshop on unconventional superconductors
- Acronym
- U-Super
- Dates
- 20-24 May 2003
- Place
- Campinas, SP (Brazil)
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 36098122
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- ANISOTROPY; CRITICAL CURRENT; CURRENT DENSITY; EXPERIMENTAL DATA; MAGNESIUM BORIDES; MAGNETIC FIELDS; MAGNETIZATION; SUPERCONDUCTING FILMS; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BORIDES; BORON COMPOUNDS; CURRENTS; DATA; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; FILMS; INFORMATION; MAGNESIUM COMPOUNDS; NUMERICAL DATA; PHYSICAL PROPERTIES
Optional Information
- Notes
- 23 refs., 4 figs. Also available from http://www.scielo.br/pdf/bjp/v33n4/a14v33n4.pdf