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論文

Single crystal growth and transport properties of RRu$$_{2}$$Al$$_{10}$$ (R = La and Pr)

迫田 將仁*; 久保田 和宏*; 田中 修平*; 松岡 英一*; 菅原 仁*; 松田 達磨; 芳賀 芳範

Journal of the Physical Society of Japan, 81(Suppl.B), p.SB011_1 - SB011_4, 2012/12

https://doi.org/10.1143/JPSJS.81SB.SB011
 被引用回数：2 パーセンタイル：19.22(Physics, Multidisciplinary)

We have succeeded in growing single crystals of RRu$$_{2}$$Al$$_{10}$$ (R =La and Pr), and measured their electrical resistivity and Hall effect to gain the deeper insight of the physical properties of CeRu$$_{2}$$Al$$_{10}$$ which exhibits an unusual long-range order (LRO) below $$T_0 sim$$ 27 K. The temperature dependences of the electrical resistivity of both LaRu$$_{2}$$Al$$_{10}$$ and PrRu$$_{2}$$Al$$_{10}$$ show the typical metallic behavior without any phase transition. The Hall effect measurements reveal that the carrier number of CeRu2Al10 in the LRO region is about 30 times smaller than that of LaRu$$_{2}$$Al$$_{10}$$, indicating highly different electronic states between these compounds below $$T_0$$.

口頭

A New polarized neutron reflectometer SHARAKU at Material Life Science Facility (MLF) at Japan Proton Accelerator Research Complex (J-PARC)

武田 全康; 山崎 大; 曽山 和彦; 林田 洋寿; 藤 健太郎; 山岸 秀志*; 片桐 政樹*; 坂佐井 馨; 丸山 龍治; 水沢 多鶴子*; et al.

no journal, , 

A new polarized neutron reflectometer (SHARAKU) was installed at the beam line 17 (BL17) of MLF as the second neutron reflectometer in J-PARC. This reflectometer was designed for a variety of surface science applications except the free surface and interface investigation. Therefore, this reflectometer has the capability of performing full polarization analysis, grazing incidence small-angle neutron scattering (GISANS), and the grazing incidence diffraction (GID) measurements. Four kinds of detectors are employed to cover a wide q-range with a proper q-resolution. One is a point detector, and the other three are two-dimensional position-sensitive-detectors. A polarizer and analyzer both of which consist of Fe/Si polarizing supermirrors and two-coil flippers are used for the polarization analysis. We will report the outline design specification, and the basic performance of this new reflectometer.

口頭

A New polarized neutron reflectometer at the intense pulsed neutron source of the Materials and Life Science Experimental Facility (MLF) of J-PARC

武田 全康; 山崎 大; 曽山 和彦; 林田 洋寿; 藤 健太郎; 山岸 秀志*; 片桐 政樹*; 坂佐井 馨; 丸山 龍治; 水沢 多鶴子*; et al.

no journal, , 

A new polarized neutron reflectometer (SHARAKU) was installed at the beam line 17 (BL17) of the Material and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). The user program of this reflectometer has been already started in February 2012. We will report the outline design specification, and the basic performance of this new reflectometer.

口頭

Polarized neutron reflectometer SHARAKU with 2-D MWPC in J-PARC

山崎 大; 曽山 和彦; 宮田 登*; 笠井 聡*; 阿久津 和宏*; 花島 隆泰*; 久保田 正人; 青木 裕之; 鈴木 淳市*; 藤 健太郎; et al.

no journal, , 

試料垂直型偏極中性子反射率計「SHARAKU」では、薄膜試料の表面や界面で起こるoff-specular反射、Grazing angle SANSの測定を目指して2次元MWPC中性子検出器を整備している。MWPCは、0.5mmピッチのワイヤーによる個別読み出し方式を採用し、各々の信号ラインにASD-ASICを配置することで、高速・高効率を実現している。本実験では、BL17ビームラインにおいて、Ni/Ti多層膜を試料として中性子反射率実験を行った。その結果、1.8mmの空間分解能を確認し、qz-qx方向について明瞭なシグナルを記録した。本報告では、2次元MWPCの特性とその中性子反射率測定への応用について述べる。

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