The mixed metal perovskite Pb0.76La0.04BI0.20VO3 displays Negative Thermal Expansion (N (a) Explain, using appropriate diagrams, why...

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The mixed metal perovskite Pb0.76La0.04BI0.20VO3 displays Negative Thermal Expansion (N (a) Explain, using appropriate diagrams, why the observed NTE is unlikely to be related to a Rig (b) What conclusions can be made from the observed hysteresis in the NTE? (3 marks) 30 10 200 300 400 500 Temperature (K) ALIL460 K (10°) 20 The mixed metal perovskite Pb0.76La0.04BI0.20VO3 displays Negative Thermal Expansion (N (a) Explain, using appropriate diagrams, why the observed NTE is unlikely to be related to a Rig (b) What conclusions can be made from the observed hysteresis in the NTE? (3 marks) 30 10 200 300 400 500 Temperature (K) ALIL460 K (10°) 20

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Solution Negative thermal expansion NTE Materials which are contracted upon heating rather than expa... View the full answer