受賞記事
高圧力下単結晶中性子散乱実験のための技術開発と磁性研究への応用
キーワード:
high pressure,
hybrid anvil,
pressure-transmitting medium,
neutron focusing device,
PrFe4P12,
HoB2C2
2012 年 22 巻 2 号 p. 139-144
詳細
2012 年 22 巻 2 号 p. 139-144
In this article, a new high-pressure apparatus for single-crystal magnetic neutron diffraction under 10 GPa is described. First, new hybrid-anvil, which is composed of an opposed pair of a supported SiC anvil and a tungsten carbide (WC) anvil with a center-dimpled culet, is introduced. Next, results of an investigation of pressure-transmitting media are shown. The hydrostaticity of the media is essential for the single-crystal diffraction experiments. Finally, a thermal neutron focusing device with a lot of curved supermirrors is shown. The device can compensate weak magnetic signals from tiny samples in high-pressure cells. As examples of the studies using the apparatus, the high-pressure single-crystal magnetic neutron diffraction experiments on 4f-electron systems PrFe4P12 and HoB2C2 are taken up.
