Crystal structure analysis in (3+d) dimensions |
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Authors: | D Kucharczyk |
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Institution: | Institute for Low Temperatures and Structure Research , PASci 50–950 pl. Katedralny1, PO Box 937, Wroclaw , Poland |
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Abstract: | Inelastic neutron scattering on in situ grown bcc single crystals of the group 4 metals Ti, Zr and Hf show a band of low energy and strongly damped phonons. Geometrical considerations show how these damped lattice vibrations achieve the displacements necessary for the two martensitic phase transitions from bcc to ω (under pressure) and from bcc to hcp (upon lowering the temperature). The low energy and temperature dependent phonons are precursor fluctuations of the hcp or ω phase within the bcc phase. |
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Keywords: | Dielectric Halogenoantimonate Phase transition |
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