The heat capacity of LaPO4 and PrPO4 nanowhiskers: Size effect and measurement features

The heat capacity of monazite-type LaPO 4 and PrPO 4 nanocrystalline whiskers, with a diameter of 30 to 45 nm and length 1–1.5 μm, was measured by adiabatic and relaxation calorimetry. The essential difference in the heat capacity of nanowhiskers and bulk particle substances was observed only at a t...

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Published in:Journal of thermal analysis and calorimetry 2018-04, Vol.132 (1), p.337-342
Main Authors: Bryukhanova, K. I., Nikiforova, G. E., Tyurin, A. V., Ryumin, M. A., Gavrichev, K. S., Smirnova, N. N.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
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Nikiforova, G. E.
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Gavrichev, K. S.
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description The heat capacity of monazite-type LaPO 4 and PrPO 4 nanocrystalline whiskers, with a diameter of 30 to 45 nm and length 1–1.5 μm, was measured by adiabatic and relaxation calorimetry. The essential difference in the heat capacity of nanowhiskers and bulk particle substances was observed only at a temperature above 100 K. The research revealed significant restrictions in the use of an adiabatic method (that uses helium as a heat-transfer gas) for measurements of nanoscale substances’ heat capacity, due to the considerable sorption of helium.
doi_str_mv 10.1007/s10973-017-6593-9
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subjects Analytical Chemistry
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
title The heat capacity of LaPO4 and PrPO4 nanowhiskers: Size effect and measurement features
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