Monoclinic .tautm. Hexagonal Phase Transition in Hydroxyapatite Studied by X-ray Powder Diffraction and Differential Scanning Calorimeter Techniques

1995 ◽  
Vol 99 (17) ◽  
pp. 6752-6754 ◽  
Author(s):  
Hiroyuki Suda ◽  
Masatomo Yashima ◽  
Masato Kakihana ◽  
Masahiro Yoshimura
Keyword(s):  
Phase Transition ◽  
Powder Diffraction ◽  
Differential Scanning Calorimeter ◽  
Hexagonal Phase ◽  
X Ray

Kinetics of the lamellar-inverse hexagonal phase transition determined by time-resolved x-ray diffraction

Biochemistry ◽  
1992 ◽  
Vol 31 (4) ◽  
pp. 1081-1092 ◽  
Author(s):  
Mark W. Tate ◽  
Erramilli Shyamsunder ◽  
Sol M. Gruner ◽  
Kevin L. D'Amico
Keyword(s):  
Phase Transition ◽  
Hexagonal Phase ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Kinetics Of

scholarly journals Mechanism of the Lamellar/Inverse Hexagonal Phase Transition Examined by High Resolution X-Ray Diffraction

2003 ◽  
Vol 84 (5) ◽  
pp. 3111-3122 ◽  
Author(s):  
Michael Rappolt ◽  
Andrea Hickel ◽  
Frank Bringezu ◽  
Karl Lohner
Keyword(s):  
Phase Transition ◽  
High Resolution ◽  
Hexagonal Phase ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals The crystallographic phase transition for a ferric thiosemicarbazone spin crossover complex studied by X-ray powder diffraction

2006 ◽  
Vol 30 (11) ◽  
pp. 1621-1627 ◽  
Author(s):  
Sébastien Floquet ◽  
Nathalie Guillou ◽  
Philippe Négrier ◽  
Eric Rivière ◽  
Marie-Laure Boillot
Keyword(s):  
Phase Transition ◽  
Powder Diffraction ◽  
Spin Crossover ◽  
X Ray

X-ray study of the triagonal --> hexagonal phase transition in metamorphic kalsilite

1999 ◽  
Vol 84 (11-12) ◽  
pp. 1950-1955 ◽  
Author(s):  
Daniela Cellai ◽  
Thorsten M. Gesing ◽  
Bernd Wruck ◽  
Michael A. Carpenter
Keyword(s):  
Phase Transition ◽  
Hexagonal Phase ◽  
X Ray

High-temperature X-ray powder diffraction study of the tetragonal-cubic phase transition in nanocrystalline, compositionally homogeneous ZrO2–CeO2 solid solutions

2008 ◽  
Vol 23 (S1) ◽  
pp. S70-S74 ◽  
Author(s):  
L. M. Acuña ◽  
R. O. Fuentes ◽  
D. G. Lamas ◽  
I. O. Fábregas ◽  
N. E. Walsöe de Reca ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
High Temperature ◽  
Powder Diffraction ◽  
Solid Solutions ◽  
Tetragonal Phase ◽  
Room Temperature ◽  
Cubic Phase ◽  
X Ray ◽  
First Order

Crystal structure of compositionally homogeneous, nanocrystalline ZrO2–CeO2 solutions was investigated by X-ray powder diffraction as a function of temperature for compositions between 50 and 65 mol % CeO2. ZrO2-50 and 60 mol % CeO2 solid solutions, which exhibit the t′-form of the tetragonal phase at room temperature, transform into the cubic phase in two steps: t′-to-t″ followed by t″-to-cubic. But the ZrO2-65 mol % CeO2, which exhibits the t″-form, transforms directly to the cubic phase. The results suggest that t′-to-t″ transition is of first order, but t″-to-cubic seems to be of second order.

X-ray powder diffraction data of A-formula lanthanum and titanium substituted lead zirconate

2003 ◽  
Vol 18 (3) ◽  
pp. 252-262 ◽  
Author(s):  
Else Breval ◽  
Nichole Wonderling ◽  
Joseph P. Dougherty
Keyword(s):  
Powder Diffraction ◽  
Diffraction Data ◽  
Tetragonal Phase ◽  
Hexagonal Phase ◽  
Lead Zirconate ◽  
Powder Diffraction Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Phase Pure

PLZT of the compositions 0≤L≤12, and 0≤T≤10 was studied in order to describe the structure of the phases as a function of composition. This range contains a mixed region with PLZT+La2Zr2O7, an orthorhombic, a rhombohedral (hexagonal) phase, a tetragonal phase, and a mixture of different PLZT phases. Each phase pure composition is described by X-ray diffraction.

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