In situ high temperature neutron powder diffraction study of oxygen-rich La2NiO4+δin air: correlation with the electrical behaviour

2006 ◽  
Vol 16 (33) ◽  
pp. 3402-3408 ◽  
Author(s):  
A. Aguadero ◽  
J. A. Alonso ◽  
M. J. Martínez-Lope ◽  
M. T. Fernández-Díaz ◽  
M. J. Escudero ◽  
...  
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction ◽  
Electrical Behaviour

In situ high-temperature X-ray and neutron powder diffraction study of cation partitioning in synthetic Mg(Fe0.5Al0.5)2O4 spinel

2010 ◽  
Vol 38 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Nicoletta Marinoni ◽  
Davide Levy ◽  
Monica Dapiaggi ◽  
Alessandro Pavese ◽  
Ronald I. Smith
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction ◽  
X Ray

Octahedral cation ordering in olivine at high temperature. II: an in situ neutron powder diffraction study on synthetic MgFeSiO 4 (Fa50)

2000 ◽  
Vol 27 (9) ◽  
pp. 630-637 ◽  
Author(s):  
S. A. T. Redfern ◽  
G. Artioli ◽  
R. Rinaldi ◽  
C. M. B. Henderson ◽  
K. S. Knight ◽  
...  
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction ◽  
Cation Ordering ◽  
Octahedral Cation

Evolution of Disordering in SiC under High Pressure High Temperature Conditions: In-situ Powder Diffraction Study

1998 ◽  
Vol 278-281 ◽  
pp. 612-617 ◽  
Author(s):  
Bogdan F. Palosz ◽  
Svetlana Stelmakh ◽  
Stanislaw Gierlotka ◽  
M. Aloszyna ◽  
Roman Pielaszek ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Diffraction Study ◽  
Powder Diffraction ◽  
Temperature Conditions ◽  
High Pressure High Temperature

In Situ Neutron Powder Diffraction Study of Ti3SiC2 Synthesis

2004 ◽  
Vol 84 (10) ◽  
pp. 2281-2288 ◽  
Author(s):  
Erdong Wu ◽  
Erich H. Kisi ◽  
Shane J. Kennedy ◽  
Andrew J. Studer
Keyword(s):  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction

Oxygen Ordered Phases in LaxSr1−xMnOy(0 ≤x≤ 0.2, 2.5 ≤ y ≤ 3): An In situ Neutron Powder Diffraction Study

2008 ◽  
Vol 20 (4) ◽  
pp. 1636-1645 ◽  
Author(s):  
Leopoldo Suescun ◽  
Bogdan Dabrowski ◽  
James Mais ◽  
Steven Remsen ◽  
James W. Richardson ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction ◽  
Ordered Phases

Mn-Mg disordering in cummingtonite: a high-temperature neutron powder diffraction study

2000 ◽  
Vol 64 (2) ◽  
pp. 255-266 ◽  
Author(s):  
J. J. Reece ◽  
S. A. T. Redfern ◽  
M. D. Welch ◽  
C. M. B. Henderson
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
New York ◽  
High Temperature ◽  
Powder Diffraction ◽  
Elevated Temperatures ◽  
Neutron Powder Diffraction ◽  
Site Preference ◽  
A Site

AbstractThe crystal structure of a manganoan cummingtonite, composition [M4](Na0.13Ca0.41Mg0.46Mn1.00) [M1,2,3](Mg4.87Mn0.13)(Si8O22)(OH)2, (Z = 2), a = 9.5539(2) Å, b = 18.0293(3) Å, c = 5.2999(1) Å, β = 102.614(2)° from Talcville, New York, has been refined at high temperature using in situ neutron powder diffraction. The P21/m to C2/m phase transition, observed as spontaneous strains +ε1 = −ε2, occurs at ˜107°C. Long-range disordering between Mg2+ and Mn2+ on the M(4) and M(2) sites occurs above 550°C. Mn2+ occupies the M(4) and M(2) sites preferring M(4) with a site-preference energy of 24.6±1.5 kJ mol−1. Disordering induces an increase in XMnM2 and decrease in XMnM4 at elevated temperatures. Upon cooling, the ordered states of cation occupancy are ‘frozen in’ and strains in lattice parameters are maintained, suggesting that re-equilibration during cooling has not taken place.

Sign in / Sign up

Export Citation Format

Share Document