The Temperature Dependence of the Preferential Magnetic Alignment of the Magnetically Stable Axes Observed for Small Oxide Crystals Dispersed in a Fluid Medium
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概要
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Temperature dependences were measured between $T=223$ K and 341 K on magnetic alignment processes of micron-sized talc crystals dispersed in liquid medium. The field intensity required for achieving alignment decreased with temperature, because of an increase in paramagnetic anisotropy and a decrease in the thermal rotational energy. The diamagnetic anisotropies estimated at infinite temperature were $-3.3 \times 10^{-4}$ and $-1.2 \times 10^{-4}$ emu/mol for two different kinds of talc samples. The order of magnitude of diamagnetic anisotropy as well as the direction of the magnetically stable axis of a material can be estimated from the measurement, even if the material contains paramagnetic ions and is too small for torque measurements.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2003-06-01
著者
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Tanaka Kenta
Institute Of Earth And Space Science Graduate School Of Science Osaka University
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Uyeda Chiaki
Institute Of Earth And Planetary Science College Of General Education Osaka University
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Sakakibara Makoto
Institute Of Earth And Space Science Graduate School Of Science Osaka University
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Uyeda Chiaki
Institute of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Sakakibara Makoto
Institute of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Tanaka Kenta
Institute of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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