A Theoretical Study of Hydrogen Bonded Ferroelectric Nd-TGS Crystals

Two theoretical models have been applied to neodymium doped triglycine sulphate (Nd-TGS) hydrogen bonded crystal pseudo spin and derived local field frequency, shift and width, polarizability, microwave absorption, acoustic wave absorption, quality factor, photo-electric sensitivity and electric res...

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Bibliographic Details
Published inProceedings of the National Academy of Sciences, India, Section A, physical sciences Vol. 82; no. 4; pp. 335 - 342
Main Authors Nautiyal, Ashish, Upadhyay, Trilok Chandra
Format Journal Article
LanguageEnglish
Published India Springer-Verlag 01.12.2012
Subjects
Applied and Technical Physics
Atomic
Molecular
Optical and Plasma Physics
Physics
Physics and Astronomy
Quantum Physics
Research Article
Potential barrier
Green’s function
Anharmonic interaction
Pseudo transition
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Summary:Two theoretical models have been applied to neodymium doped triglycine sulphate (Nd-TGS) hydrogen bonded crystal pseudo spin and derived local field frequency, shift and width, polarizability, microwave absorption, acoustic wave absorption, quality factor, photo-electric sensitivity and electric resistivity in good agreement with the experimental results. Due to the similar mechanism in crystal dynamics of all hydrogen bonded ferroelectric materials, we are able to apply a common model over the crystal structure with some contemporary modifications according to different crystal lattice. By this method we can derive different relations for ferroelectric crystals even in with biased condition. We have applied the two theoretical models i.e., pseudo spin lattice coupled mode model and Ising spin model with Green’s function method to Nd-TGS to derive different expressions for the dielectric, acoustic, photothermal and electric properties.
ISSN:0369-8203
2250-1762
DOI:10.1007/s40010-012-0043-7