Electrical and Structural Properties of Ex-situ Annealed Superconducting Bi2Sr2CaCu2O8 Thin Films Obtained by Coevaporation of Components

Necdet BAŞTÜRK

Makale detayları

Electrical and Structural Properties of Ex-situ Annealed Superconducting Bi2Sr2CaCu2O8 Thin Films Obtained by Coevaporation of Components

Yazarlar:

Necdet BAŞTÜRK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2005 Vol.29 Issue 2, pp.115-118

Belge Tipi:

Makale

Yayın Tarihi:

1/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000761586

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Anahtar kelimeler:

Özet:

 

Bi2Sr2CaCu2O8 system superconducting thin films were  obtained by synchronized deposition of Bi, Cu, CaF2 and SrF2  components onto cleaved MgO (100) single crystal substrates after  annealing in the temperature range 600--840 °C. The films were  annealed in H2O and O2, then dry O2 atmosphere for the removal of  fluorine from the structure and to attain superconducting properties.   X-ray powder diffraction patterns were used to characterize the  obtained film structure.  The films were observed to grow along c-axis  perpendicular to the substrate surface with the identified reflection  on the (00l, l = 6, 8, 10...)  planes.  The films having the critical  temperature higher than liquid nitrogen were obtained when Bi and the  other components were evaporated from separate sources.  DC resistance  in the films were measured in the temperature range 77--300 K. of  those films having good superconducting properties, metallic behaviors  were seen in the normal state and zero resistance at 79 K was obtained  following a transition in the resistance.

 

Bi2Sr2CaCu2O8 system superconducting thin films were  obtained by synchronized deposition of Bi, Cu, CaF2 and SrF2  components onto cleaved MgO (100) single crystal substrates after  annealing in the temperature range 600--840 °C. The films were  annealed in H2O and O2, then dry O2 atmosphere for the removal of  fluorine from the structure and to attain superconducting properties.   X-ray powder diffraction patterns were used to characterize the  obtained film structure.  The films were observed to grow along c-axis  perpendicular to the substrate surface with the identified reflection  on the (00l, l = 6, 8, 10...)  planes.  The films having the critical  temperature higher than liquid nitrogen were obtained when Bi and the  other components were evaporated from separate sources.  DC resistance  in the films were measured in the temperature range 77--300 K. of  those films having good superconducting properties, metallic behaviors  were seen in the normal state and zero resistance at 79 K was obtained  following a transition in the resistance.

Makale detayları

Electrical and Structural Properties of Ex-situ Annealed Superconducting Bi2Sr2CaCu2O8 Thin Films Obtained by Coevaporation of Components

Yazarlar:

Necdet BAŞTÜRK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2005 Vol.29 Issue 2, pp.115-118

Belge Tipi:

Makale

Yayın Tarihi:

1/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000761586

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Superconductivity

BSCCO

2212 phase

thin film

coevaporation

ex-situ annealing.

Sayı

Makale detayları

Electrical and Structural Properties of Ex-situ Annealed Superconducting Bi2Sr2CaCu2O8 Thin Films Obtained by Coevaporation of Components

Yazarlar: Necdet BAŞTÜRK

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2005 Vol.29 Issue 2, pp.115-118

Belge Tipi: Makale

Yayın Tarihi: 1/2005

Belge Dili: Türkçe

Document ID (Org No.): 2000761586

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Superconductivity

BSCCO

2212 phase

thin film

coevaporation

ex-situ annealing.

Sayı

Yazarlar:

Necdet BAŞTÜRK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2005 Vol.29 Issue 2, pp.115-118

Belge Tipi:

Makale

Yayın Tarihi:

1/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000761586

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101