scholarly journals Thermodynamics of copper‐manganese and copper‐iron spinel solid solutions

2017 ◽  
Vol 100 (8) ◽  
pp. 3684-3692 ◽  
Author(s):  
Sulata K. Sahu ◽  
Alexandra Navrotsky
Keyword(s):  
Solid Solutions ◽  
Copper Manganese ◽  
Spinel Solid Solutions

scholarly journals Some Aspects of Spinodal Decomposition in Spinel Solid Solutions

1995 ◽  
Vol 50 (6) ◽  
pp. 525-532
Author(s):  
N. Burkert ◽  
R. Grüne ◽  
H. Schmalzried ◽  
S. Rahman
Keyword(s):  
Spinodal Decomposition ◽  
Solid Solutions ◽  
Common Property ◽  
Transport Theory ◽  
Decomposition Reaction ◽  
Sufficient Evidence ◽  
Spinel Crystal ◽  
Linear Transport Theory ◽  
Spinel Solid Solutions ◽  
Quasi Binary System

Abstract Decomposition morphologies of supersaturated spinel solid solutions in the quasi-binary system Co2TiO4-CoAl2O4 at 973 K show all pertinent features of spinodal decomposition. Since the decomposition morphology may not be considered as sufficient evidence for a spinodal process, the thermodynamics of the spinel solid solutions and the linear transport theory of spinodal decomposition were combined to corroborate the experimental results of the early decomposition reaction.Simultaneous ordering, a common property of ternary and higher nonequilibrium solid solutions, was also observed. These ordering processes occur locally in distinct regions of the spinel crystal. Moreover, the spinodal wavelength λ increases in time according to λ ∞ t, which is unusual and will be discussed in the light of cation diffusion in semiconducting oxides with two cation sublattices.

scholarly journals Non-monotonic compositional dependence of isothermal bulk modulus of the (Mg1–Mn )Cr2O4 spinel solid solutions, and its origin and implication

2016 ◽  
Vol 1 (3) ◽  
pp. 89-100 ◽  
Author(s):  
Xi Liu ◽  
Zhihua Xiong ◽  
Sean R. Shieh ◽  
Qiang He ◽  
Liwei Deng ◽  
...  
Keyword(s):  
Bulk Modulus ◽  
Solid Solutions ◽  
Compositional Dependence ◽  
Isothermal Bulk Modulus ◽  
Spinel Solid Solutions

Spinel solid solutions in the systems MgAl2O4–ZnAl2O4 and MgAl2O4–Mg2TiO4

1997 ◽  
Vol 12 (10) ◽  
pp. 2584-2588 ◽  
Author(s):  
M. A. Petrova ◽  
G. A. Mikirticheva ◽  
A. S. Novikova ◽  
V. F. Popova
Keyword(s):  
Solid Solution ◽  
Phase Diagrams ◽  
Melting Temperature ◽  
Solid Solutions ◽  
Spinel Structure ◽  
Room Temperature ◽  
Binary Systems ◽  
Continuous Series ◽  
X Ray ◽  
Spinel Solid Solutions

Phase relations in two binary systems MgAl2O4–ZnAl2O4 and MgAl2O4–Mg2TiO4 have been studied and phase diagrams for them have been constructed. Based on the data of x-ray phase and crystal-optical analyses, the formation of a continuous series of solid solutions with spinel structure between the terminal members of the systems studied has been established. In the MgAl2O4–ZnAl2O4 system the solid solution is stable in the range from room temperature to melting temperature. In the MgAl2O4–Mg2TiO4 system the solid solution decomposes below 1380 °C, yielding the formation of limited regions of homogeneity on the basis of MgAlM2O4 and Mg2+2δ Ti1–δO4. Decomposition of the solid solution is accompanied by crystallization of MgTiO3.

Mössbauer studies of ZnCr2xGa2−2x O4 spinel solid solutions: A cluster spin glass for 0.6 ≲x ≲ 0.85

1986 ◽  
Vol 28 (1-4) ◽  
pp. 561-564 ◽  
Author(s):  
J. L. Dormann ◽  
A. Saifi ◽  
D. Fiorani
Keyword(s):  
Spin Glass ◽  
Solid Solutions ◽  
Mössbauer Studies ◽  
Cluster Spin Glass ◽  
Spinel Solid Solutions

Experimental study on the solubility of Cr2+ in olivine, orthopyroxene and spinel solid solutions

1997 ◽  
Vol 16 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Li Jianping ◽  
Hugh St. C. O’Neill ◽  
Friedrich Seifert
Keyword(s):  
Experimental Study ◽  
Solid Solutions ◽  
Spinel Solid Solutions
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