Low temperature (2K - 20K) heat capacity determination of a polycrystalline zirconium oxide (ZrO) based material containing calcium (Ca) and europium (Eu)
Date of Award
Master's Research Paper
Master of Science (MS)
Dr. Laurence L. Henry
Dr. Pradeep Bhattacharya
Dr. Diola Bagayoko
The calorimetric properties of a CaEuZrO based sample, synthesized by a solid-state reaction process in the Electron Transport and Magnetic Properties of Materials (ETMPM) lab, are investigated by analyzing low temperature (2 -20 K) heat capacity data. The total heat capacity of a material may be expressed as C = Celec + Cph + Cnuc + Cmag + Ci. In mathematical terms, it may be expressed as C = yT + aT3 + An T-2 + Ci. In this equation, the term yT is the electronic heat capacity, aT3 is the lattice or phonon heat capacity, AnT-2 is the nuclear heat capacity and Ci represents any other heat capacity contributors that may be present. The various contributors may be identified based on their distinct temperature dependence in different temperature ranges. In the study, previously collected heat capacity data for the sample is analyzed. Estimates for the lattice and electronic coefficients were determined to be a= 1 x 10-6 J/g-K4 and y = 2 x 10-7 J/g-K2, respectively. Thus, the lattice heat capacity is dominant in the temperature range from 2 -20 K.
Wade, Watasha M., "Low temperature (2K - 20K) heat capacity determination of a polycrystalline zirconium oxide (ZrO) based material containing calcium (Ca) and europium (Eu)" (2003). Electronic Dissertations and Theses. 103.