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- 長壁 豊隆
- 日本原子力研究開発機構量子ビーム応用研究部門中性子物質科学研究ユニット
書誌事項
- タイトル別名
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- Development of High-Pressure Technique for Single-Crystal Magnetic Neutron Diffraction under 10 GPa
- 10GPaキュウ タンケッショウ チュウセイシ ジキ カイセツ オ メザシタ コウアツリョク ギジュツ ノ カイハツ
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説明
A hybrid-anvil device was newly developed for high-pressure single-crystal magnetic neutron diffraction experiments up to 10 GPa. The device is composed of a large sapphire anvil and a tungsten carbide (WC) anvil that has a hollow in the center of the culet. In a feasibility test of the device, the maximum pressure of 7 GPa was generated with high stability. The hydrostaticity of pressure-transmitting media, which is essential for the single-crystal diffraction experiments, was investigated by evaluating the mosaic spread of NaCl single crystals under pressure. It was found that glycerin transmits the nearly hydrostatic pressure even at 7 GPa. Using the hybrid-anvil device, single-crystal magnetic neutron diffraction experiments on valence transition material YbInCu4 were performed up to 6.2 GPa. In spite of the small magnetic moment of less than 1μB/Yb, distinct magnetic signals were observed. This was accomplished by using the thermal neutron focusing device with the hybrid-anvil device.
収録刊行物
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- 波紋
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波紋 18 (4), 208-213, 2008
日本中性子科学会
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詳細情報 詳細情報について
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- CRID
- 1390001205390898176
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- NII論文ID
- 130001998215
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- NII書誌ID
- AA11905115
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- ISSN
- 1884636X
- 1349046X
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- NDL書誌ID
- 9681811
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