Thermodynamic properties of KH(2)AsO(4) and KD(2)As0(4)
MetadataShow full item record
Measurement of the specific heat and electric susceptibility of KH(2)AsO(4) and KD(2)AsO(4) have been performed in the region of their respective ferroelectric transitions. Both substances undergo first-order transitions with latent heat of 300 and 570 J/mole, respectively. The entropy associated with the transition is found to be 0.506R and0,500R respectively. The Curie constants are found to be 187 and 358 K, respectively. The thermal data are used to deduce the spontaneous polarization. The polarization then deduced agrees with electrocaloric data for KH(2)AsO(4), the only case where independent polarization data are available. The maximum spontaneous polarizations are found to be 5.25 and 7.20 uC/cm2, respectively. It is shown that the theory of Silsbee, Uehling and Schmidt provides an excellent description of the thermodynamic properties of both materials.
Showing items related by title, author, creator and subject.
Kahraman, Kemal (Monterey, California. Naval Postgraduate School, 2007-03);This thesis examines the relationship between advanced education and the retention and promotion of Army officers. It uses data from the Active Duty Military Master File for Army officers who were commissioned between 1981 ...
Kwon, Y.W.; Priest, E.M.; Gordis, J.H. (2013-06);The study examined the effect of fluid–structure interaction on global dynamic properties such as vibrational frequency, mode shape, modal curvature, as well as free vibrational responses along E-glass composite, carbon ...
High-bandwidth scanned-wavelength-modulation spectroscopy sensors for temperature and H2O in a rotating detonation engine Goldenstein, Christopher S., Almodóvar, Christopher A., Jeffries, Jay B., Hanson, Ronald K.; Brophy, Christopher M. (IOP Publishing, 2014);The design and use of two-color tunable diode laser (TDL) absorption sensors for measurements of temperature and H2O in a rotating detonation engine (RDE) are presented. Both sensors used rst-harmonic-normalized ...