Investigation of the ac magnetic field dependence of the first and the third harmonics of the ac susceptibility in a granular Bi-2223 sample
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, cilt.202, sa.9, ss.1793-1798, 2005 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 202 Sayı: 9
- Basım Tarihi: 2005
- Doi Numarası: 10.1002/pssa.200420033
- Dergi Adı: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
- Sayfa Sayıları: ss.1793-1798
- Ankara Üniversitesi Adresli: Evet
Özet
The field and temperature dependencies of the first and third harmonics of the ac magnetic susceptibilities of a granular Bi-2223 superconductor have been investigated. Model calculations have been performed on the basis of a theoretical model that incorporates collective creep concepts in a critical-state equation by considering the temperature-dependent effective volume fraction. The predictions of the model for the field and temperature dependencies of the first and third harmonics were found to be in good agreement with experimental data.