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Chemicals, plastics and rubber industries

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Ultrasonic investigations of hydrogels containing barium ferrite particles

Article Abstract:

A study is conducted to establish a systematic and accurate method for evaluating the sound velocity of polymer gels containing magnetic particles using 2.25- and 10-MHz ultrasoni c waves at 295.5 K. the observed anisotropy in the modulus at these frequencies would be ascribed to the magnetic interaction between magnetic particles in the range of ~100 (mu)m.

Author: Juliac, Etienne, Mitsumata, Tetsu, Taniguchi, Takashi, Iwakura, Kenji, Koyama, Kiyohito
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
Polymers, Ultrasonic waves, Properties, Ultrasound

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DFT study on ferroelectricity of BaTiO3

Article Abstract:

The plane-wave pseudopotential method and the LCAO quantum chemical approach in the framework of density functional theory (DFT) are used to investigate the ferroelectricity of BaTiO3. The DFT calculations show a lattice constant of 3.99 Armstrong and dielectric constant of 5.74 for the cubic BaTiO3.

Author: Zhao-Xu Chen, Yi Chen, Yuan-Sheng Jiang
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
Electric properties, Titanium dioxide, Density functionals, Density-functional theory

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Synthesis and optical characterization of aluminum nitride nanobelts

Article Abstract:

The synthesization of aluminum nitride nanobelts is studied. The optical characterization indicates that the vibration modes of the AIN nanobelt agrees with the AIN film despite its nanobelt geometry.

Author: Yi Chen, Al-Jassim, M.M., Qiang Wu, Zheng Hu, Xizhang Wang
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
Analysis, Optical properties, Optics, Structure, Optical research, Aluminum nitride

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Subjects list: Research, Usage, Chemistry, Physical and theoretical, Physical chemistry, Barium compounds
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