Magnetorotation Experiment of Diamagnetic Single-Crystal Grains Suspended in a Gas Medium for Examining Dust Alignment in the Interstellar Region : Condensed Matter: Electronic Properties, etc.

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概要

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• The magnetic alignment of diamagnetic grains suspended in a gas medium is observed for the first time on micron-sized single crystals of graphite by the use of a system newly developed for this purpose. Previously magnetic alignment was studied on grains suspended in a liquid medium. The field of full orientation H_s at T = 293 K was as small as 140 G when the crystal size was 3.5 μm in diameter and 1.0 μm in thickness. It was examined experimentally that the alignment in the gas medium depends on the balance between the thermal agitation energy and the diamagnetic anisotropy energy induced in the particle. This experiment is necessary in order to examine the grain alignment of the interstellar region, which is the basis to observe the interstellar magnetic field. The experiment is necessary also to determine the diamagnetic anisotropy for various inorganic materials through high-temperature measurements.

• 社団法人日本物理学会の論文
• 2001-05-15

著者

• Uyeda Chiaki

  Institute Of Earth And Planetary Science College Of General Education Osaka University

• SAKAKIBARA Makoto

  Institute of Earth and Space Science, Graduate School of Science, Osaka University

• Chihara Hiroki

  Institute Of Earth And Space Science Graduate School Of Science Osaka University

• Sakakibara Makoto

  Institute Of Earth And Space Science Graduate School Of Science Osaka University

• KOMATSU Takumitsu

  Institute of Earth and Space Science, Graduate School of Science, Osaka University

• Komatsu Takumitsu

  Institute Of Earth And Space Science Graduate School Of Science Osaka University

• Uyeda Chiaki

  Institute of Earth and Space Science, Graduate School of Science, Osaka University

関連論文

• The Investigation of Isotopic Mass Fractionation Processes in the Primordial Solar Nebula and the Realization of in-situ Isotope Survey of Primitive Materials
• The Temperature Dependence of the Preferential Magnetic Alignment of the Magnetically Stable Axes Observed for Small Oxide Crystals Dispersed in a Fluid Medium
• Magnetic Alignment of Nonmagnetic Mica Crystals Achieved at Low Field Intensity Due to High Concentration of Paramagnetic Ions
• Magnetic Alignment at Reduced Field Intensity Due to Decrease of Temperature Observed for Nonferromagnetic Particles Possessing Paramagnetic and Diamagnetic Anisotropy
• Magnetic Alignment of Micron-Sized Particles at Low Temperature Achieved on Particles Dispersed in He Gas Medium
• Characteristics of Paramagnetic and Diamagnetic Anisotropy which Induce Magnetic Alignment of Micron-Sized Non-Ferromagnetic Particles
• Stabilization of the Position of a Solid Body Isolated in Micro-Gravity and Field-Induced Rotational-Oscillation Caused by Diamagnetic Anisotropy
• Diamagnetic Anisotropy of Inorganic Oxides Correlated with the Directions of Chemical Bonds
• The Development of Isotope-Ratio Microscope for Realizing the in Situ Survey of Small Isotopic Anomaly of Primitive Materials (質量分析総合討論会特集号) -- (総合討論会のシンポジウム:同位体とMS)
• Diamagnetic Anisotropy Derived from Single Chemical Bonds in the Silicate Tetrahedral Networks : Condensed Matter: Electronic Properties, etc.
• Diamagnetic Anisotropy Derived from the Hydrogen Bond
• Diamagnetic Anisotropy of Simple Inorganic Oxides Composed of Octahedral Networks Detected by Field-Induced Harmonic Oscillation in the High-Temperature Region
• Diamagnetic Anisotropy of Silicates Composed of Tetrahedral Networks : Condensed Matter: Electronic Properties, etc.
• Diamagnetic Anisotropy Detected by a Magnetic Oscillation in Drop Tube without Suspending Crystals with Fiber
• Magnetorotation Experiment of Diamagnetic Single-Crystal Grains Suspended in a Gas Medium for Examining Dust Alignment in the Interstellar Region : Condensed Matter: Electronic Properties, etc.
• Magnetic Ejection and Oscillation of Diamagnetic Crystals Observed in Microgravity
• Rotational Motion of Inorganic Diamagnetic Crystals Induced in the Magnetic Field
• The Temperature Dependence of the Preferential Magnetic Alignment of the Magnetically Stable Axes Observed for Small Oxide Crystals Dispersed in a Fluid Medium
• Stabilization of the Position of a Solid Body Isolated in Micro-Gravity and Field-Induced Rotational-Oscillation Caused by Diamagnetic Anisotropy
• Magnetic Anisotropy of Ordinary Crystals without Spontaneous Magnetic Moments Detected by Rotational Oscillations Induced by a Field of a Horseshoe Magnet
• Ion Microprobe and Electron Microprobe Studies on Magnesium Isotopic Abundances in Olivine Minerals from the Allende Carbonaceous Chondrite (SIMS特集)

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