Correlations of Infrared Absorption, Conductivity, and Stoichiometry in EuO — a New Phase Diagram

Author(s):  
M. W. Shafer ◽  
J. B. Torrance ◽  
T. Penney
1995 ◽  
Vol 102 (4) ◽  
pp. 1846-1850 ◽  
Author(s):  
Seiji Katayama ◽  
Masanori Shimizu ◽  
Yukio Akahori

1967 ◽  
Vol 22 (8) ◽  
pp. 1177-1180 ◽  
Author(s):  
Bengt Augustsson ◽  
Arnold Kvist

Previously obtained conductivity and viscosity results for the system (Li,K)2SO4 with less than 3 mole% K2SO4 show bad agreement with the phase diagram given in the literature. From conductivity, viscosity and differential thermal analysis we have constructed a new phase diagram for these concentrations.


Author(s):  
R. H. Heffner ◽  
J. L. Smith ◽  
J. O. Willis ◽  
P. Birrer ◽  
C. Baines ◽  
...  

1986 ◽  
Vol 34 (5) ◽  
pp. 3162-3164 ◽  
Author(s):  
S. Takahashi ◽  
M. Tachiki
Keyword(s):  

1993 ◽  
Vol 321 ◽  
Author(s):  
Masakuni Suzuki ◽  
Akio Kitagaffa

ABSTRACTThe heating rate dependence of the phase transition temperature was formulated based on the temperature dependence of nucleation of a new phase. The glass transition temperature of a-Si was explained in terms of van der Waals fluid of a-Si pseudo-Molecules which are produced by the fragmentation of continuous random networks of Si atoms. Transient phases and their transition temperatures as a function of the heating rate are summarized in the phase diagram.


Author(s):  
Dhananjai Pandey ◽  
Akhilesh Kumar Singh ◽  
Sunggi Baik

The morphotropic phase boundary in the phase diagram of the technologically important Pb(ZrxTi1−x)O3(PZT) ceramics has been traditionally believed to separate ferroelectric tetragonal and rhombohedral phase regions. This old picture has come under close scrutiny during the last eight years following the discovery of new monoclinic phases in theCmandCcspace groups. This article presents a brief overview of these discoveries in which the use of multiple diffraction probes (X-ray, electron, neutron diffraction) in conjunction with physical property measurements has played a crucial role. A new phase diagram of PZT showing the stability fields of these structures below room temperature is also presented.


2011 ◽  
Vol 106 (22) ◽  
Author(s):  
A. Martinelli ◽  
A. Palenzona ◽  
M. Tropeano ◽  
M. Putti ◽  
C. Ferdeghini ◽  
...  

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
BG Golovkin

Using the methods of X-ray phase and X-ray Densitometric analysis, the phase equilibria between oxides of manganese, iron and antimony have been investigated in an air atmosphere at temperatures up to 1250? in an air mosphere at normal pressure. The phase diagram of the system at 1200? was built MnO-Mn2O3-FeO-Fe2O-Sb2O3-Sb2O5. A new phase was found Mn12-2x,sup>2+Fe2x2+Sb3+Sb55+O26(0?x?1), with edge compositions FeMn5Sb3O13 and Mn6Sb3O3 (a=8.5003?0.0025Å; b=8.0064?0.0025Å; c=11.5779?0.0025Å; Z = 3; ?obs. = 5.7 g/cm3; ?calc = 5.6991 g/cm3). The phase exists in the temperature range 1180-1230oC and can be obtained by quenching, but always with a large admixture of Mn2Sb2O7 and spinel Mn112+Mn133+Sb93+O44.The reason for this behavior is that air molecules have different temperatures, as a result of which the phase composition of the reaction mixture cannot be strictly related to one temperature, and different phases can be stable at different temperatures.


Sign in / Sign up

Export Citation Format

Share Document