Question
The mixed metal perovskite Pb0.76La0.04Bi0.20VO3 displays Negative Thermal Expansion (NTE) as illustrated. (a) Explain, using appropriate diagrams, why the observed NTE is unlikely to be
The mixed metal perovskite Pb0.76La0.04Bi0.20VO3 displays Negative Thermal Expansion (NTE) as illustrated.
(a) Explain, using appropriate diagrams, why the observed NTE is unlikely to be related to a Rigid Unit Mode. (4 marks)
(b) What conclusions can be made from the observed hysteresis in the NTE? (3 marks)
30 20 10 200 300 400 500 Temperature (K) ALIL460 K (10)
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solution Negative thermal expansion NTE Materials which are contracted upon heating rather than expa...
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Materials Science and Engineering An Introduction
Authors: William D. Callister Jr., David G. Rethwisch
8th edition
470419970, 978-0470419977
