検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Growth of PrFeAsO$$_{1-y}$$ single crystals and its characterization

PrFeAsO$$_{1-y}$$の単結晶育成と輸送特性

石角 元志; 社本 真一  ; 鬼頭 聖*; 伊豫 彰*; 永崎 洋*; 伊藤 利充*; 富岡 泰秀*

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

ベルト型高圧合成装置を用いて酸素欠損オキシニクタイド超伝導体PrFeAsO$$_{1-y}$$の単結晶試料を育成した。得られた単結晶試料の超伝導転移温度(Tc)は45Kであり、典型的な大きさは約800$$times$$1000$$times$$30$$mu m^3$$である。面内電気抵抗率は、銅酸化物高温超伝導体と同様にほぼ温度に比例する振る舞いを示しており、銅酸化物高温超伝導体と同様に強い非弾性散乱効果の存在が示唆される。さらにas-grownの単結晶試料を常圧下でアニールすることにより非超伝導の母相単結晶試料を得た。母層の試料の電気抵抗は、150K付近に構造相転移に相当するキンクと、12K付近のPrイオンの磁気秩序に起因すると考えられる構造で特徴付けられる。

Single crystals of oxygen deficient oxypnictide superconductor PrFeAsO$$_{1-y}$$ have been grown by using belt-type anvil high pressure synthesis apparatus. Superconducting transition temperature ($textit{T$_c$}$) of the obtained single crystal is 45 K, and typical size is about 800 $$times$$ 1000 $$times$$ 30 $$mu m^3$$. In-plane electrical resistivity shows almost proportional to temperature as well as the copper oxide high temperature superconductors, suggesting the existence of effects of strong inelastic scattering like copper oxide high temperature superconductor. In addition, we obtained non-superconducting parent single crystal by annealing the as-grown single crystal under ambient pressure. Resistivity of parent single crystal is characterized by the kink near 150 K corresponding to the structural transition, and the structure near 12 K, which is thought to be originating from the magnetic order of Pr ion.

Access

:

- Accesses

InCites™

:

パーセンタイル:13.13

分野:Physics, Applied

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.