Results 251 to 260 of about 5,504,773 (297)

Phase boundaries in ammonium sulfate

Physica Status Solidi (a), 1977
Phase boundaries between paraelectric and ferroelectric regions of ammonium sulfate single crystal plates are investigated. The stable directions of the boundaries with respect to the crystallo-graphic axes are deduced from spontaneous deformations at the phase transition.
H. Hussinger, G. Unruh
openaire   +1 more source

Phase Transitions on the Boundary of a Domain

Journal of Mathematical Sciences, 2003
The author considers the minimization problem for the energy functional of a two-phase medium concentrated at the boundary of a domain. He studies regularization of the functional by means of the area of the boundary of the phase interface under additional conditions on the displacement field.
openaire   +2 more sources

A Multiferroic Morphotropic Phase Boundary

Advanced Materials
ABSTRACT Bismuth ferrite (BiFeO 3 ) thin films possess large ferroelectric polarization and antiferromagnetic order, yet their magnetoelectric coupling is limited by weak intrinsic magnetization.
Tae Yeon Kim, Shashank Ojha, Bridget R. Denzer, Michael Xu, Ching‐Che Lin, Jesse Schimpf, Jaegyu Kim, Liyan Wu, Ramamoorthy Ramesh, Ilya Grinberg, Jonathan E. Spanier, James M. LeBeau, Lane W. Martin   +12 more
openaire   +2 more sources

Theory of the morphotropic phase boundary

Ferroelectrics, 2001
A Landau theory is presented for the morphotropic phase boundaries in the solid solution system of perovskite-type oxide ferroelectrics. The origin of useful functions of materials located close to the morphotropic phase boundary are attributed to the isotropy of the thermodynamic potential.
openaire   +1 more source

On Elastic Boundary Conditions at Phase Boundaries

MRS Proceedings, 1988
The elastic distortions of two adjacent crystals separated by a phase boundary are in general of great complexity. Three types of phase boundaries are considered, depending on their apparent ability to maintain continuity of 1, 2 or 3 plane orientations.
openaire   +1 more source

Phase Transition within a Phase Boundary

The Journal of Chemical Physics, 1972
The excess free energy σ due to the phase boundary has been expressed previously using the bulk properties of the two phases meeting at the boundary as exp(−Aσ/kT)= ∑ ν [p(II)(ν)p(I)(ν)]1/2,where σ is per unit area, A is the cross-sectional area of the boundary, and p(I)(v) is the probability that a configuration v of the lattice plane parallel to the ...
openaire   +1 more source

Toughening by Phase Boundary Propagation

2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

The phase boundaries in binary alloys, part 2: the theory of the  ,   phase boundaries

Proceedings of the Physical Society, 1937
A quantitative theory of the phase boundaries in alloys between the face-centred and the body-centred cubic structures is given. The theory is applied in detail to alloys in which copper is the major constituent. The width of the (?+?) mixed-crystal region is obtained with fair approximation; it is found that the width of this region decreases with ...
openaire   +1 more source

The phase boundary as a kink

Ferroelectrics, 1989
Abstract An experimental verification was made of the theoretical results obtained by Gordon for the motion of phase boundaries in PbTiO3 single crystals. Making use of the jerky motion of the phase boundary the supercooling was determined together with the corresponding value of phase boundary velocity.
openaire   +1 more source

Evolution of Phase Boundaries by Configurational Forces

Archive for Rational Mechanics and Analysis, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alber, Hans-Dieter, Zhu, Peicheng
openaire   +1 more source