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Report No.

Growth of single cystal PrFeAsO$$_{1-y}$$ and transport properties, 2

Ishikado, Motoyuki; Shamoto, Shinichi  ; Kito, Hijiri*; Iyo, Akira*; Eisaki, Hiroshi*; Ito, Toshimitsu*; Tomioka, Yasuhide*

In the previous meeting, we have grown single crystals of oxygen deficient oxypnictide high temperature superconductor PrFeAsO$$_{1-y}$$, and characterized anisotropy from resistivity under magnetic field. Anisotropy of upper critical field (H$$_{c2}$$) is $$Gamma sim$$ 5 and is consistent with other group's reported value. In this study, we succeeded to control doping by adjusting the oxygen content. We measured resistivity under magnetic field and estimated anisotropy of the doping controled single crystals, and revealed that anisotropy is not doping dependent. In the session, we report details of doping control, characterization such as resistivity and XRD, estimation of anisotropy.



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