Spontaneous strain of conductive strontium titanate Sr1−xLaxTiO3measured by using X-ray topographic domain contrast

2011 ◽  
Vol 84 (9-10) ◽  
pp. 837-842 ◽  
Author(s):  
T. Ozaki ◽  
K. Kusunose ◽  
H. Yamaguchi ◽  
K. Kajiwara ◽  
Y. Chikaura
Keyword(s):  
Strontium Titanate ◽  
Spontaneous Strain ◽  
X Ray

X-ray diffraction study on surface modified complex strontium titanate microparticles

2003 ◽  
Vol 351 (1-2) ◽  
pp. 295-298 ◽  
Author(s):  
G.Y. Liu ◽  
Y.L. Zhang ◽  
X.M. Feng ◽  
J.K. Liang ◽  
G.H. Rao
Keyword(s):  
Diffraction Study ◽  
Strontium Titanate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Modified

Preparation and Characterization of Nanosized Barium-Strontium Titanate Immobilized on Aluminum Oxide and its Application in Separation of Cr(III) and Cr(VI)

2010 ◽  
Vol 152-153 ◽  
pp. 1013-1016
Author(s):  
Hong Wang ◽  
Jing Yang
Keyword(s):  
Aluminum Oxide ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Complete Separation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ph Values ◽  
Barium Strontium

Nanometer barium-strontium titanate based coated aluminum oxide (ABST) was prepared by the sol–gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectrophotometry (FTIR). Its application in speciation of Cr(III) and Cr(VI) from water were studied. The results showed that the nanometer barium-strontium titanate was immobilized on aluminum oxide firmly, becoming a new adsorbent. Two forms of chromium showed different exchange capacities at different pH values, viz. Cr (III) selectively retained at pH 10–13, whereas Cr (VI) retained at pH 1. Hence complete separation of the two forms of chromium is possible. Retained species were eluted with 5mL of 1 mol•L−1 HCl and 1 mol•L−1 NaOH. The Cr(III) and Cr(VI) concentration was measured by atomic absorption spectroscopy. The adsorbent had a promising prospect in the separation of Cr(III) and Cr(VI) in environment water.

An X-ray photoelectron spectroscopy study of strontium-titanate-based high-k film stacks

2012 ◽  
Vol 90 ◽  
pp. 138-140 ◽  
Author(s):  
L. Sygellou ◽  
H. Tielens ◽  
C. Adelmann ◽  
S. Ladas
Keyword(s):  
Strontium Titanate ◽  
Photoelectron Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray ◽  
High K

scholarly journals Synthesis and Characterization of Strontium Titanate Nanoparticles as Potential High Temperature Oxygen Sensor Material

2006 ◽  
Vol 2006 ◽  
pp. 1-6 ◽  
Author(s):  
Florian Voigts ◽  
Tanja Damjanovic ◽  
Günter Borchardt ◽  
Christos Argirusis ◽  
Wolfgang Maus-Friedrichs
Keyword(s):  
High Temperature ◽  
Strontium Titanate ◽  
Photoelectron Spectroscopy ◽  
Oxygen Sensor ◽  
Ambient Conditions ◽  
X Ray ◽  
Sensor Material ◽  
Force Microscopy ◽  
Atomic Force

We present a simple and highly reproductive method for the preparation of thin films consisting of strontium titanate nanoparticles. The films are produced by spin coating of a sol on silicon targets and subsequent annealing under ambient conditions. Analysis by atomic force microscopy shows particles with typical sizes between 10 nm and 50 nm. X-ray photoelectron spectroscopy displays a stoichiometry of the films as anticipated from preliminary experiments with strontium titanate single crystals. Metastable-induced electron spectroscopy and ultraviolet photoelectron spectroscopy are used as tools to give evidence to the similar electronic properties of nanoparticle film and single crystal. These results support the prospect for an application of the nanoparticle films as high temperature oxygen sensor with superior properties.

I1̄ – I2/c ferroelastic phase transition in the Ca0.2Pb0.8Al2Si2O8 feldspar as a function of temperature

2000 ◽  
Vol 64 (2) ◽  
pp. 285-290 ◽  
Author(s):  
P. Benna ◽  
M. Tribaudino ◽  
E. Bruno
Keyword(s):  
Room Temperature ◽  
Monoclinic Phase ◽  
Strain Tensor ◽  
Spontaneous Strain ◽  
Linear Coupling ◽  
X Ray ◽  
Ferroelastic Phase Transition ◽  
Increasing Temperature ◽  
Alkali Feldspars

AbstractFeldspar of composition Ca0.2Pb0.8Al2Si2O8 (PbF80An20) was synthesized from melt and subsequently isothermally annealed at T = 960°C for 4 days. In situ HT X-ray powder spectra of PbF80An20 feldspar, triclinic I1̄ at room temperature, were collected in the temperature range 20–800°C, and a displacive continuous ferroelastic transition to a I2/c monoclinic phase was observed. An analysis of the symmetry-required components of the spontaneous strain tensor reveals the second order character (β = 0.46 ± 0.02) of the transition with TC = 680 ± 15°C. A linear coupling was observed between the e4 and e6 components of the spontaneous strain. The transition is analogous to those observed, with increasing temperature, along the join An–SrF and in disordered Na-rich alkali feldspars. A comparison with Ca0.2Sr0.8Al2Si2O8 feldspar (TC = 680°C, McGuinn and Redfern, 1997) shows that PbF80An20 has a higher spontaneous strain (εs = 0.028 in PbF80An20vs 0.020 in Ca0.2Sr0.8Al2Si2O8) and a higher e4 component, possibly related to the higher distortion of the non-tetrahedral polyhedron in lead feldspar.

Sign in / Sign up

Export Citation Format

Share Document