Next Article in Journal / Special Issue
Contactless Determination of Electric Field in Metal–Insulator–Semiconductor Interfaces by Using Constant DC-Reflectivity Photoreflectance
Previous Article in Journal / Special Issue
Use of Dynamic Mechanical Analysis (DMA) for Characterizing Interfacial Interactions in Filled Polymers
Article

Heat Capacities of Nanostructured Wurtzite and Rock Salt ZnO: Challenges of ZnO Nano-Phase Diagram

1
School of Engineering and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3JZ, UK
2
IMPMC, Sorbonne Université, CNRS, IRD, Muséum National d’Histoire Naturelle, 75005 Paris, France
3
IUF, Institut Universitaire de France, 75005 Paris, France
4
LSPM–CNRS, Université Sorbonne Paris Nord, 93430 Villetaneuse, France
5
Department of Chemistry, Moscow State University, 119991 Moscow, Russia
6
Saint Petersburg Mining University, 199106 Saint Petersburg, Russia
*
Author to whom correspondence should be addressed.
Solids 2021, 2(1), 121-128; https://doi.org/10.3390/solids2010007
Received: 15 January 2021 / Revised: 10 February 2021 / Accepted: 20 February 2021 / Published: 1 March 2021
(This article belongs to the Special Issue Feature Papers of Solids 2021)
Low-temperature heat capacities (Cp) of nanostructured rock salt (rs-ZnO) and wurtzite (w-ZnO) polymorphs of zinc oxide were measured in the 2–315 K temperature range. No significant influence of nanostructuring on Cp of w-ZnO has been observed. The measured Cp of rock salt ZnO is lower than that of wurtzite ZnO below 100 K and is higher above this temperature. Using available thermodynamic data, we established that the equilibrium pressure between nanocrystalline w-ZnO and rs-ZnO is close to 4.6 GPa at 300 K (half as much as the onset pressure of direct phase transformation) and slightly changes with temperature up to 1000 K. View Full-Text
Keywords: zinc oxide; heat capacity; nanostructure; phase diagram; high pressure zinc oxide; heat capacity; nanostructure; phase diagram; high pressure
Show Figures

Figure 1

MDPI and ACS Style

Kamenev, K.V.; Courac, A.; Sokolov, P.S.; Baranov, A.N.; Sharikov, F.Y.; Solozhenko, V.L. Heat Capacities of Nanostructured Wurtzite and Rock Salt ZnO: Challenges of ZnO Nano-Phase Diagram. Solids 2021, 2, 121-128. https://doi.org/10.3390/solids2010007

AMA Style

Kamenev KV, Courac A, Sokolov PS, Baranov AN, Sharikov FY, Solozhenko VL. Heat Capacities of Nanostructured Wurtzite and Rock Salt ZnO: Challenges of ZnO Nano-Phase Diagram. Solids. 2021; 2(1):121-128. https://doi.org/10.3390/solids2010007

Chicago/Turabian Style

Kamenev, Konstantin V., Alexandre Courac, Petr S. Sokolov, Andrei N. Baranov, Felix Y. Sharikov, and Vladimir L. Solozhenko. 2021. "Heat Capacities of Nanostructured Wurtzite and Rock Salt ZnO: Challenges of ZnO Nano-Phase Diagram" Solids 2, no. 1: 121-128. https://doi.org/10.3390/solids2010007

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop