Analysis of Zn substitution on structure, optical absorption, magnetization, and high temperature specific heat anomaly of the nano-crystalline LaFeO3

2018 ◽  
Vol 124 (6) ◽  
pp. 065110 ◽  
Author(s):  
Samiya Manzoor ◽  
Shahid Husain
Keyword(s):  
High Temperature ◽  
Optical Absorption ◽  
Specific Heat ◽  
Zn Substitution ◽  
Nano Crystalline

High-temperature specific heat of crystals

1979 ◽  
Vol 20 (10) ◽  
pp. 4012-4017 ◽  
Author(s):  
Rosemary A. MacDonald ◽  
Raymond D. Mountain ◽  
Ramesh C. Shukla
Keyword(s):  
High Temperature ◽  
Specific Heat

Chemical Property of Ground Calcium Carbonate as Carbon Dioxide Absorbent

2010 ◽  
Vol 654-656 ◽  
pp. 2923-2926 ◽  
Author(s):  
Seiji Yokoyama ◽  
Nik Hisyamudin Muhd Nor ◽  
Shunsuke Hirano
Keyword(s):  
Carbon Dioxide ◽  
High Temperature ◽  
Calcium Carbonate ◽  
Physicochemical Properties ◽  
Specific Heat ◽  
Chemical Property ◽  
Emission Rate ◽  
Dissociation Reaction ◽  
Dissociation Pressure ◽  
Ground Calcium Carbonate

Commercial sedimentation CaCO3 was ground by a vibration rod mill to investigate the physicochemical properties of mechanically activated CaCO3.When the CaCO3of the calcite structure was ground, the intensities of the crystal facesof calcite was decreased by distortions and so on, and the aragonite appeared as the grinding proceeded. The formed aragonite was transformed to the calcite when the sample was heated at 773K for3.6 ks. The dissociation pressure of CO2 of the ground CaCO3was larger than that of the non-ground CaCO3.The enthalpy; entropy and specific heat of change of the dissociation reaction were obtained. At high temperature, the emission rate of the ground CaCO3 was slightly larger than that of the non-ground CaCO3. At room temerature, the CaCO3 adsorbs CO2, and it desorbs the adsorbed CO2. The amount of adsorbed CO2 on the ground CaCO3 was larger than that of the non-ground CaCO3.

Fermi–Dirac Statistics

2019 ◽  
pp. 386-403
Author(s):  
Robert H. Swendsen
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Specific Heat ◽  
Fermi Energy ◽  
Fermi Gas ◽  
Main Application ◽  
Densities Of States ◽  
Low Temperature Specific Heat ◽  
Very High ◽  
The Ideal

The main application of Fermi–Dirac Statistics is to calculate the properties of electrons. This chapter explains how the properties of fermions account for the behavior of metals. The Fermi energy is introduced and shown to correspond to a very high temperature, so that most properties can be obtained from low-temperature expansions. Both discrete and continuous densities of states are discussed. The Sommerfeld expansion is derived explicitly. The low-temperature specific heat and compressibility are derived. The most important fermions are electrons, and understanding the properties of electrons is central to understanding the properties of all materials. In this chapter we will study the ideal Fermi gas, which turns out to explain many of the properties of electrons in metals.

Specific heat of Hg-based high temperature superconductors nearT c

1996 ◽  
Vol 46 (S6) ◽  
pp. 3177-3184 ◽  
Author(s):  
A. Carrington ◽  
C. Marcenat ◽  
F. Bouquet ◽  
D. Colson ◽  
V. Viallet
Keyword(s):  
High Temperature ◽  
Specific Heat ◽  
High Temperature Superconductors

Changes in the defect structure of diamond due to high temperature+ high pressure treatment

1975 ◽  
Vol 344 (1636) ◽  
pp. 111-130 ◽  
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
High Temperature ◽  
Optical Absorption ◽  
Defect Structure ◽  
Pressure Treatment ◽  
High Pressure Treatment ◽  
X Ray ◽  
High Temperature High Pressure ◽  
Absorption Measurements

Type la and type IIa diamonds have been heated to temperatures in the range 2000-2300 °C under a pressure of about 4.8 GPa. The changes in the defect structure of these diamonds as a result of the heat treatm ent have been examined by optical absorption measurements, integrated X-ray spike measurements and by electron microscopy. Type la diamonds changed colour from colourless to yellow after being heated for 1 min in the temperature range 2250-2300 °C and it has been shown that the yellowing was due to scattering. The scattering centres responsible were elliptically shaped cracks in the cube planes with their longest dimension in a <110> direction

High Temperature Specific Heat of AgBr

1951 ◽  
Vol 19 (4) ◽  
pp. 517-517 ◽  
Author(s):  
R. W. Christy ◽  
A. W. Lawson
Keyword(s):  
High Temperature ◽  
Specific Heat
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