The ferroelectric phase transition in LiTaO3 studied by neutron scattering
I. The Long-Range Order |
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| Authors: | Emil J Samuelsen and Alf P Grande |
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| Institution: | (1) Theoretical Sciences Unit, J Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560 064, India |
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| Abstract: | Elastic neutron scattering from two reflections has been studied versus temperature, and the temperature dependence of the ferroelectric polarizationP(T) has been deduced. Neart
c
=601°C the dependence is found to be classical: (T
c
–T)1/2. The study supports a model where the ferroelectric transition is accompanied by an order-disorder transition of the lithium ions. |
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| Keywords: | |
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