Magnetic and magnetoelastic properties of a ferromagnetic single crystal with cubic symmetry

1978 ◽  
Vol 3 ◽  
pp. 479-501 ◽  
Author(s):  
E. Du Trémolet de Lacheisserie ◽  
P. Morin ◽  
J. Rouchy
Keyword(s):  
Single Crystal ◽  
Cubic Symmetry ◽  
Magnetoelastic Properties

Calculation of Single-Crystal Elastic Constants for Cubic Crystal Symmetry from Powder Diffraction Data

1998 ◽  
Vol 31 (6) ◽  
pp. 929-935 ◽  
Author(s):  
Thomas Gnäupel-Herold ◽  
Paul C. Brand ◽  
Henry J. Prask
Keyword(s):  
Single Crystal ◽  
Least Squares ◽  
Powder Diffraction ◽  
Elastic Constants ◽  
Diffraction Data ◽  
Lattice Strain ◽  
Strain Response ◽  
Powder Diffraction Data ◽  
Cubic Crystal ◽  
Cubic Symmetry

In this work a method is developed that allows the computation of the single-crystal elastic constants for crystals of cubic symmetry from the diffraction elastic constants. The diffraction elastic constants can be obtained by measuring thehkl-dependent lattice strain response to an applied stress. Because of theirhkldependence they represent, partially, the anisotropic nature of the single-crystal elastic constants. The computation of the single-crystal elastic constants is carried out by a least-squares refinement which fits the calculated diffraction elastic constants to the measured ones.

Magnetic and magnetoelastic properties of single crystal Tb/sub 0.5/Dy/sub 0.5/Zn

1996 ◽  
Vol 32 (5) ◽  
pp. 4782-4784 ◽  
Author(s):  
J.B. Restorff ◽  
M. Wun-Fogle ◽  
J.P. Teter ◽  
J.R. Cullen ◽  
A.E. Clark
Keyword(s):  
Single Crystal ◽  
Magnetoelastic Properties

Epitaxial Growth of Anisotropically Shaped, Single-crystal Particles of Cubic SrTiO3

2000 ◽  
Vol 15 (4) ◽  
pp. 846-849 ◽  
Author(s):  
Koji Watari ◽  
Bhaskar Brahmaroutu ◽  
Gary L. Messing ◽  
Susan Trolier-McKinstry ◽  
Shang-Cong Cheng
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Single Crystal ◽  
Epitaxial Growth ◽  
Edge Length ◽  
Reaction Site ◽  
Cubic Symmetry ◽  
Transmission Electron ◽  
Precursor Material ◽  
Novel Method

A novel method for synthesizing anisotropically shaped particles of materials having cubic symmetry is reported. Anisotropically shaped single-crystal particles of cubic SrTiO3 were obtained by epitaxial growth on tabular tetragonal Sr3Ti2O7. Transmission electron microscopy revealed that both the shape and the size of the single-crystal particles was regulated by selecting a precursor material that can act as a reaction site in molten KCl and has an epitaxial relation with SrTiO3. The [001] and [110] directions of tabular SrTiO3 are parallel to the [001] and [110] directions of the Sr3Ti2O7 host particle, respectively. Tabular SrTiO3 particles with rectangular faces having an edge length of 10–20 μm and a thickness of ˜2 μm were obtained by reacting TiO2 and tabular Sr3Ti2O7 particles of the same edge length in molten KCl.

scholarly journals Single-crystal neutron and X-ray diffraction study of garnet-type solid-state electrolyte Li6La3ZrTaO12: an in situ temperature-dependence investigation (2.5 ≤ T ≤ 873 K)

2021 ◽  
Vol 77 (1) ◽  
pp. 123-130
Author(s):  
Günther J. Redhammer ◽  
Martin Meven ◽  
Steffen Ganschow ◽  
Gerold Tippelt ◽  
Daniel Rettenwander
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Czochralski Method ◽  
Atomic Displacement ◽  
X Ray Diffraction ◽  
Solid State Electrolyte ◽  
Cubic Symmetry ◽  
X Ray ◽  
Site Occupation ◽  
Atomic Displacement Parameters

Large single crystals of garnet-type Li6La3ZrTaO12 (LLZTO) were grown by the Czochralski method and analysed using neutron diffraction between 2.5 and 873 K in order to fully characterize the Li atom distribution, and possible Li ion mobility in this class of potential candidates for solid-state electrolyte battery material. LLZTO retains its cubic symmetry (space group Ia 3 d) over the complete temperature range. When compared to other sites, the octahedral sites behave as the most rigid unit and show the smallest increase in atomic displacement parameters and bond length. The La and Li sites show similar thermal expansion in their bond lengths with temperature, and the anisotropic and equivalent atomic displacement parameters exhibit a distinctly larger increase at temperatures above 400 K. Detailed inspection of nuclear densities at the Li1 site reveal a small but significant displacement from the 24d position to the typical 96h position, which cannot, however, be resolved from the single-crystal X-ray diffraction data. The site occupation of LiI ions on Li1 and Li2 sites remains constant, so there is no change in site occupation with temperature.

Oriented Overgrowths on Sodium Chloride

1967 ◽  
Vol 25 ◽  
pp. 338-339
Author(s):  
E. A. Rosauer ◽  
C. B. Wagner
Keyword(s):  
Sodium Chloride ◽  
Surface Morphology ◽  
Single Crystal ◽  
Petroleum Ether ◽  
Three Dimensional ◽  
Surface Treatments ◽  
Methanol Solution ◽  
Surface Phenomena ◽  
Cubic Symmetry ◽  
Methanol Treatment

Replica studies of a freshly-cleaved surface of a NaCl single crystal which had been treated for 15 seconds with a relatively impure (bulk) methanol revealed the presence of a large number of three-dimensional oriented overgrowths having cubic symmetry (Fig. 1). Attempts to reproduce such morphological surface phenomena about 6 months later with the same methanol were not successful, possibly due to “aging” of the methanol. Treatment for 15 seconds with A.C.S. methanol did not result in any significant surface morphology. So far, the nature of the impurity in the bulk methanol has not been identified; however, analyses indicate that it is present in an amount less than 0.15%. All surface treatments of NaCl were followed by a 5-second rinse in A.C.S. acetone and another 5-second rinse in petroleum ether (Skelly B). Neither rinse contributed to surface morphology. Freshly cleaved NaCl surfaces were also treated with 1.25% by weight of A.C.S. NH4Cl in A.C.S. methanol and 1.36% by weight of U.S.P. 37% formaldehyde-water-methanol solution in A.C.S. methanol.

Effective elastic constants and acoustic properties of single-crystal TiN/NbN superlattices

1992 ◽  
Vol 7 (8) ◽  
pp. 2248-2256 ◽  
Author(s):  
Jin O. Kim ◽  
Jan D. Achenbach ◽  
Meenam Shinn ◽  
Scott A. Barnett
Keyword(s):  
Single Crystal ◽  
Elastic Constants ◽  
Acoustic Waves ◽  
Mass Density ◽  
Surface Acoustic Waves ◽  
Dispersion Curves ◽  
Acoustic Properties ◽  
Tetragonal Symmetry ◽  
Cubic Symmetry ◽  
Effective Elastic Constants

Using the measured elastic constants of TiN and NbN single crystals with cubic symmetry, the effective elastic constants of single-crystal TiN/NbN superlattice films with tetragonal symmetry, namely c11, c12, c13, c33, c44, and c66 have been calculated for various thickness ratios of the layers. Using a line-focus acoustic microscope, measurements of surface acoustic waves (SAWs) have been carried out on single-crystal TiN/NbN superlattice films grown on the (001) plane of cubic crystal MgO substrates. The phase velocities measured as functions of the angle of propagation display the expected anisotropic nature of cubic crystals. Dispersion curves of SAWs propagating along the symmetry axes have been obtained by measuring wave velocities for various film thicknesses and frequencies. The SAW dispersion curves calculated from the effectiveelastic constants and the effective mass density of the superlattice films show very good agreement with experimental results. The results of this paper exhibit no anomalous dependence of the elastic constants on the superlattice period of TiN/NbN superlattices.

Magnetic and magnetoelastic properties of GdNi: Single-crystal study

2007 ◽  
Vol 310 (2) ◽  
pp. 1753-1754 ◽  
Author(s):  
K. Uhlířová ◽  
J. Prokleška ◽  
J. Poltierová Vejpravová ◽  
V. Sechovský ◽  
K. Maezawa
Keyword(s):  
Single Crystal ◽  
Magnetoelastic Properties ◽  
Single Crystal Study
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