Concept

Système cristallin orthorhombique

Publications associées (37)

Structural investigation of thin SrTiO3 films grown on MgO and LaAlO3 substrates

Nava Setter, Alexander Tagantsev, Konstantin Astafiev

Structural investigations of SrTiO3 thin films deposited by pulsed laser ablation onto MgO and LaAlO3 substrates are presented. The residual strain along the c -axis (the growth direction) was evaluated with conventional X-ray diffraction. Evaluation of th ...

2003

Piezoelectric anisotropy-phase transition relations in perovskite single crystals

Nava Setter, Dragan Damjanovic, Marko Budimir

The orientation dependence of the longitudinal piezoelectric coefficient, d(33)(*), is investigated as a function of temperature in BaTiO3 and PbTiO3 crystals using the Landau-Ginsburg-Devonshire theory. We show that a presence of the ferroelectric-ferroel ...

2003

X-ray resonant scattering study of the quadrupolar order in UPd3

Henrik Moodysson Rønnow

Quadrupolar ordering in a 5f electron system has been observed directly for the first time, using x-ray scattering techniques. In UPd3 at low temperatures satellite peaks appear at (1, 0, l) (orthorhombic notation) with I odd and even. Both sets of peaks s ...

2001

Anisotropy in the ab-plane optical properties of Bi2Sr2CaCu2O8 single-domain crystals

Giorgio Margaritondo, Helmuth Berger

The ab-plane optical properties of the high-temperature superconductor Bi2Sr2CaCu2O8 are anisotropic in both the normal and the superconducting state. Consistent with the orthorhombic structure, the principal axes lie along the a and b crystallographic axe ...

1999

Crystal structure and domain-wall contributions to the piezoelectric properties of strontium bismuth titanate ceramics

Dragan Damjanovic

The piezoelectric properties of SrBi4Ti4O15 and Bi4Ti2.95Nb0.04O12 have been compared as a function of applied ac stress. Evidence of domain-wall motion was observed in Bi4Ti2.95Nb0.04O12 but not in SrBi4Ti4O15. Examination of SrBi4Ti4O15 using transmissio ...

1996

Raman-Spectroscopy, X-Ray-Diffraction, And Phase Relationship Determinations With A Versatile Heating Cell For Measurements Up To 3600-K (Or 2700-K In Air)

Philippe Gillet

A simple, rapid, and inexpensive heating-wire technique is used for physical observations at high temperatures. The upper limit is 2000 K in air with platinum-iridium or platinum-rhodium wires and 2700 K with iridium; temperatures up to 3600 K can be achie ...

1993

(CH3)4NHgBrI2 - a New Polar Organic-Inorganic Double Halide

Paul Muralt, Gervais Chapuis

(CH3)4NHgBrI2 exhibits at room temperature a polar columnar structure based on edge-sharing anion tetrahedra with a double anion occupancy. Its orthorhombic space group is Pb2//1m. An unusual multiple phase transition sequence revealed by differential scan ...

Taylor & Francis1982

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