Superconductivity and magnetism in Co substituted YBCO compounds
1988; Elsevier BV; Volume: 156; Issue: 3 Linguagem: Inglês
10.1016/0921-4534(88)90764-2
ISSN1873-2143
AutoresRyôzô Aoki, Singo Takahashi, Hironaru Murakami, Toshikazu Nakamura, Takahiro Nakamura, Yoshiki Takagi, Ruixing Liang,
Tópico(s)Magnetic and transport properties of perovskites and related materials
ResumoSuperconducting transition temperature Tc and magnetic susceptibility χ were measured on Co substituted YBCO system, YBa2[Cu1−xCox]3Oy. The observed characteristic dependence of Tc on the substitution concentration x w investigated taking the magnetic data into consideration. The operating mechanism of the Co ion at the Cu(I) site on the superconducting state in the [Cu(II)O] net-planes are inquired from the two viewpoints: (1) changes in electronic state and (2) magnetic moment induction at the Cu(II) site. The possibility of both being induced by displacement of the oxygen atom O(1) between Cu(I) and Cu(II) is considered.
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