Results 261 to 270 of about 142,775 (314)

Investigation of Measured Pole Figures Errors

Materials Science Forum, 2005
The objective of the present work is to study of errors on measured pole figures of hexagonal materials. We used neutron time-of-flight (TOF) technique for texture measurements and obtained spectra for estimating of error values of measured pole figures.
D.I. Nikolayev, T.A. Lychagina, A.V. Nikishin, V.V. Yudin   +3 more
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Instrumentation for RHEED Pole Figure

2013
In this chapter, we describe the major reflection high-energy electron diffraction (RHEED) hardware components: a vacuum system, an electron gun, a sample manipulator, a step motor, a phosphor screen, and a charge-coupled device camera. Most molecular beam epitaxy (MBE) laboratories with in situ RHEED characterization capability are equipped with this ...
Gwo-Ching Wang, Toh-Ming Lu
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Automatic Pole Figure Plotter

Review of Scientific Instruments, 1965
A simple recording apparatus has been developed which automatically plots preferred orientation information obtained by x-ray diffraction in pole figure from. It is used with spiral scanning, counter tube, preferred orientation x-ray goniometers. The apparatus consists of an X-Y recorder, a spiral time base signal generator, and an encoder which ...
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Spurious Areas in Pole Figures

Journal of Applied Physics, 1954
Spurious maxima are frequently observed in pole figures determined by x-ray diffraction techniques employing the Geiger-counter spectrogoniometer. Their origin must be fully understood in order to avoid misleading interpretations of the pole-figure data.
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Automatic Pole Figure Recorder

Review of Scientific Instruments, 1954
A device has been developed for the direct recording in stereographic projections of pole figure data as they are supplied from a Geiger counter x-ray diffraction apparatus. The specimen is rotated systematically in a suitable goniometer about two axes in synchronism with movements of the chart and printer on the recorder. When the diffracted intensity
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Reducing the Effects of Nonuniform Pole Distribution in Inverse Pole Figure Studies

Journal of Applied Physics, 1959
When x-ray-diffraction preferred orientation data are applied to the prediction of some physical property in a particular fabrication direction, a direct inverse pole figure determination is desirable. Two tests have been applied to the method. The first concerns the use of x-ray-diffraction preferred orientation data for the prediction of an aggregate
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Illustration of Texture with Ultrasonic Pole Figures

1987
Materials are most often used in the form of polycrystalline aggregates. Preferential orientation of the grains or crystallites within such an aggregate is known as “texture”, and almost all methods of fabrication will tend to develop a texture to some degree. To differentiate among textures, it is desirable to describe and quantify them. One technique
Smith, J., Thompson, R. Bruce, Rehbein, David, Nagel, T., Armstrong, P., Eash, D.   +5 more
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The Analysis of Quantitative Pole-Figure Data

Journal of Applied Physics, 1954
An analysis of isolated concentrations of poles in a pole-figure plot has been made in terms of a normal bivariate frequency distribution. A definition of pole density is given, and absolute units for measuring pole density are introduced. Simple procedures for determining the standard deviation of the pole-density distribution and for calculating the ...
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Averaging Techniques and Ultrasonic Pole Figures

1988
There is considerable interest in the evaluation of texture via ultrasonic measurements because of the advantages when compared to evaluation by diffraction techniques. First, ultrasonic measurements are much more rapid and have the potential of being used concurrently while processing.
Smith, J., Li, Y., Thompson, R. Bruce
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Recording and Analysis of Pole Figures by Computer

Journal of Applied Physics, 1968
A computer program has been written to produce pole figures using the data from an x-ray texture goniometer. The data are corrected for background and absorption. The pole figure is also stored on magnetic or paper tape in a form suitable for quantitative calculations.
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