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Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
X-ray Crystallography02:18

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...

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Charge trapping by iodine ions in photorefractive Sn<sub>2</sub>P<sub>2</sub>S<sub>6</sub> crystals.

The Journal of chemical physics·2020
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Intrinsic small polarons (Sn³⁺ ions) in photorefractive Sn₂P₂S₆ crystals.

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Lattice instability at phase transitions near the Lifshitz point in proper monoclinic ferroelectrics.

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Related Experiment Video

Updated: Jul 8, 2026

High Pressure Single Crystal Diffraction at PX^2
11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

Highly efficient acousto-optic diffraction in Sn2P2S6 crystals.

I Yu Martynyuk-Lototska1, O G Mys, A A Grabar

  • 1Institute of Physical Optics, 23 Dragomanov Street, 79005 Lviv, Ukraine.

Applied Optics
|December 25, 2007
PubMed
Summary

TinллиP2S6 crystals exhibit excellent acousto-optic (AO) properties, showing high AO figure of merit. These findings suggest their potential as efficient materials for various acousto-optic applications.

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Last Updated: Jul 8, 2026

High Pressure Single Crystal Diffraction at PX^2
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Published on: January 16, 2017

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
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Area of Science:

  • Materials Science
  • Optics
  • Solid State Physics

Background:

  • Acousto-optic (AO) devices rely on materials with specific properties to modulate light using sound waves.
  • Efficient AO materials are crucial for applications like optical switching, signal processing, and tunable filters.

Purpose of the Study:

  • To investigate the acousto-optic diffraction properties of Sn2P2S6 crystals.
  • To determine the potential of Sn2P2S6 as a material for acousto-optic applications.

Main Methods:

  • Experimental study of acousto-optic diffraction in Sn2P2S6 crystals.
  • Measurement of key acousto-optic parameters, including the figure of merit.

Main Results:

  • Sn2P2S6 crystals demonstrate high values of the acousto-optic figure of merit.
  • The observed AO properties indicate significant potential for light modulation.

Conclusions:

  • Sn2P2S6 crystals are highly efficient materials for acousto-optic applications.
  • The material's properties make it suitable for advanced AO device development.