The magnetic and electrical properties of rare-earth Sm3+ substituted Bi1.7Pb0.3Sr2Ca2-xSmxCu3O12 system

Ekicibil A., Coskun A., Ozcelik B., Kiymac K.

MODERN PHYSICS LETTERS B, vol.19, no.6, pp.331-340, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 6
  • Publication Date: 2005
  • Doi Number: 10.1142/s0217984905008372
  • Journal Name: MODERN PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.331-340
  • Çukurova University Affiliated: Yes

Abstract

In the present work, the magnetic properties of high-T Bi1.7Pb0.3Sr2Ca2-xSmxCu3O12 system (x = 0.03) have been investigated, for different temperatures below T,. Substitution of Sm3+ for Ca2+ is found to change the superconducting properties of the system, despite the weak paramagnetic nature of the Sm3+ ion. The dc magnetization measurements performed on the compound reveal that the superconducting regions decrease with increasing temperature and magnetic field. The results are explained on the basis of a possible reduction of hole concentration with trivalent rare-eaxth ion substitution, and also on the basis of the magnetic nature of the substituted Sm3+ ions.