Lateral habits ofn-alkane single crystals |
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| Authors: | A Toda H Miyaji Y Ogawa K Takamizawa |
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| Affiliation: | (1) Department of Physics, Faculty of Science, Kyoto University, 606 Kyoto, Japan;(2) Faculty of General Education, Kumamoto University, 860 Kumamoto, Japan;(3) Department of Applied Science, Faculty of Engineering, Kyushu University, 812 Fukuoka, Japan |
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| Abstract: | The lateral crystal habits ofn-alkanes (n-C
n
H2n+2) have been observed just below the melting points by optical microscopy forn=18, 19, 20, 22, 24, 34, 44, 50 and 65. The shape of the crystals depends on the crystal phase: circular in the rotator phase,
lenticular in phase C, and diamond in the low-temperature phase. The rounding of the lateral shape can be explained in terms
of thermal roughening of the lateral faces in the disordered phases at high temperature. |
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