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Temperature Variation of Magnetic Anisotropy of Organic Crystals


As has been shown by Krishnan1 and his collaborators, the study of the magnetic anisotropy of organic crystals enables us in many cases to determine the orientation of the molecules in the crystal lattice. A natural extension of this important line of work, suggested to me by Sir C. V. Raman, is the investigation of the effect of temperature on magnetic anisotropy, which may be expected to yield valuable information regarding the character of the thermal motions (for example, oscillations and hindered or free rotations) of the molecules in the crystal lattice and to elucidate the mechanism of fusion.

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  1. 1

    Krishnan, K. S., Guha, B. C., and Banerjee, S., Phil. Trans., A, 231, 235 (1933).

  2. 2

    Robertson, J. M., Proc. Roy. Soc., A, 157, 79 (1936).

  3. 3

    Lonsdale, K., NATURE, 137, 826 (1936).

  4. 4

    Krishnan, K. S., and Banerjee, S., Phil Trans., A, 234, 265 (1935).

  5. 5

    Hend ricks, S. B., Posnjack, J., and Kracek, E. C., J. Amer. Chem. Soc., 54, 2766 (1932).

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