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Report No.

Growth of single crystal PrFeAsO$$_{1-y}$$ and its transport properties

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

Single crystals of oxygen deficient oxypnictide superconductor PrFeAsO$$_{1-y}$$ were grown by high pressure method using belt-type anvil apparatus. Grown crystals have shiny ab-plane surfaces. Typical crystal size is about 800$$times$$1000$$times$$20 mm$$^3$$, which is one order larger than the previous reported LnFeAs(O,F) single crystal size. Upper critical field obtained from resistivity measurement under magnetic field yields anisotropy of $$Gammasim$$5, which is consistent with other group's reported result. In the session, we will talk details of the method of doping control of the single crystal and doping dependences of anisotropy.



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