Innovation of New Magneto-Effects on Nonmagnetic Solids due to Diamagnetic Anisotropy that Originate form Individual Hydrogen Bonds

由于源自单个氢键的抗磁各向异性，对非磁性固体产生新磁效应的创新

• 批准号: 14350008
• 负责人: UYEDA Chiaki
• 金额: $ 2.75万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14350008/
• 关键词: diamagnetic anisotropy; chemical bond; magnetic orientation; magnetic alignment; microgravity; horseshoe magnet; paramagnetic anisotropy; 磁気異方性; 磁気回転; 磁気振動; 水素結合; 磁気異方性測定; 低温; 弱磁場; 生セッコウ; KDP; 磁場整列能率; 無機酸化物

Magnetic alignment, commonly used in various devices, is believed to occur only on materials which possess spontaneous magnetic moment. We have recently found that many of the ordinary "nonmagnetic" crystals show rotational oscillation with respect to magnetic field [page 22,49,53]. Oscillations have been observed for popular materials such as calcite, gypsum, graphite, quartz, forsterite, mica, Rochelle salt or urea (see picture below) ; the motion is similar to that of a compass caused by terrestrial field. The oscillations derived from anisotropy of diamagnetic susceptibility (Δχ)_<DIA>. The magnitude of (Δχ)_<DIA> directly indicates the efficiency of magnetic alignment of a given material, however its existence is not recognized for most of the materials at present.

通常用于各种器件中的磁对准被认为仅发生在具有自发磁矩的材料上。我们最近发现，许多普通的“双”晶体都表现出相对于磁场的旋转振荡[22，49，53页]。人们已经观察到常见材料的振荡，如方解石、石膏、石墨、石英、镁橄榄石、云母、罗谢尔盐或尿素（见下图）;这种运动类似于地球磁场引起的罗盘运动。反磁磁化率（Δχ）的各向异性引起的振荡<DIA>。（Δ x）_的大小<DIA>直接反映了给定材料的磁取向效率，但目前大多数材料都没有认识到它的存在。

项目成果

Efficiency of Magnetic Alignment Detected for Non-magnetic Oxide Crystals Deriving from Individual Bonding Orbital

检测源自单个键合轨道的非磁性氧化物晶体的磁对准效率

• 发表时间: 2004
• 期刊: Trans. Mater. Res. Soc. Jpn 29
• 作者: Takeshi Matsumoto;Masayuki Yoshino;Takahisa Asano;Kentaro Uesugi;Masahiro Todoh;Masao Tanaka;Hiroshi Wada;C.Uyeda
• 通讯作者: C.Uyeda

Magnetic Alignment of Nonmagnetic Mica Crystals Achieved at Low Field Intensity Due to High Concentration of Paramagnetic Ions

由于高浓度的顺磁性离子，在低场强度下实现非磁性云母晶体的磁性排列

• 发表时间: 2005
• 期刊: Jpn.J.Appl.Phys.Pt 2 44
• 作者: 宮田昌悟;本間一弘;古川克子;牛田多加志;立石哲也;Masaaki Sato;Ikeda.Y;K. Tsubota;T.Kimura;K.Ito;T. Karino;Hiroshi Wada;C.Uyeda
• 通讯作者: C.Uyeda

Magnetic Alignment Experiment of Fine Graphite-Crystals Dispersed in He Gas Oriented to Study Alignment of Crystalline-Axes of Nano-sized Particles.

氦气定向分散细石墨晶体的磁取向实验研究纳米粒子晶轴的取向。

• 发表时间: 2005
• 期刊: J.Electron Microscopy 43(In print)
• 作者: C.Uyeda;M.Skakibara;K.Tanaka;R.Takashima
• 通讯作者: R.Takashima

公開特許:微結晶体の配向方法及び微結晶配向集合体の製造方法

已公开专利：微晶取向方法及取向微晶聚集体的制造方法

C.Uyeda, M.Sakakibara, K.Tanaka: "Magneto-Rotation of Micron-sized Diamagnetic Single Crystals Dispersed in Diffused Medium in Micro Gravity Condition"Proc. Drop Tower Days 2002 in Japan. 83-87 (2002)

C.Uyeda、M.Sakakibara、K.Tanaka：“微重力条件下分散在扩散介质中的微米级反磁性单晶的磁旋转”Proc。