Dielectric, Ferroelectric and Thermal Studies of Gel Grown Yttrium Tartrate (YT) Crystals

Kumar, Sanjay; Kaur, Balwinder; Kotru, P. N.; Bamzai, K. K.

doi:10.1080/00150190600732504

Cited by 13 publications

(2 citation statements)

References 35 publications

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“…It is an established fact that the condition for observing a maximum in the dielectric loss of a dielectric material is given by the relation xs = 1, where x = 2pf max and s is the relaxation time. This type of behavior of tangent loss with frequency has been reported in other compounds such as the yttrium tartrate and the glycinium maleate [25,26]. The dielectric loss tangent (tand) depends upon the specific features of molecular main chain motion within the polymer.…”

Section: Uv-visible Absorption Spectral Analysismentioning

confidence: 87%

Synthesis, crystal structure, spectral, dielectric characteristics and conduction mechanism of two novel carboxylates of 1-benzhydrylpiperazine

et al. 2015

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Two new 1-benzhydrylpiperazinium carboxylates with tartrate and maleate, (C 17 H 21 N 2 )(C 4 H 5 O 6 ) and (C 17 H 22 N 2 )(C 4 H 3 O 4 ) 2 , have been synthesized and characterized. Crystal structure determinations show that the compounds crystallize in the P2 1 and the P2 1 /c space groups of the monoclinic system, respectively. Only in the maleate the organic group is protonated on both nitrogen atoms of piperazine ring. The infrared spectra of these compounds reported from 400 to 4000 cm -1 confirmed the presence of the principal bands assigned to the internal modes of cations and anions of both compounds. The optical band gaps were calculated and found to be 3.46 and 4.14 eV for tartrate and maleate, respectively. Different molecular motions were determinate via dielectric relaxation spectroscopy. Measurements of AC conductivity as a function of frequency at different temperatures indicated the hopping conduction mechanism. The number of 13 C CP-MAS NMR lines is in good agreement with the crystallographic data. Graphical abstract

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Section: Uv-visible Absorption Spectral Analysismentioning

confidence: 87%

Synthesis, crystal structure, spectral, dielectric characteristics and conduction mechanism of two novel carboxylates of 1-benzhydrylpiperazine

et al. 2015

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“…The authors have earlier reported the dielectric, ferroelectric and thermal properties of yttrium tartrate (YT) crystals [23]. To best of the authors' knowledge no data on the dielectric …”

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confidence: 98%

Dielectric and Ferroelectric Studies on Gel Grown Samarium Tartrate (SmT) Crystals

et al. 2007

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Samarium tartrate (SmT) single crystals have been grown by gel encapsulation technique. The crystallinity of the grown crystals was confirmed by XRD technique. The dielectric constant, dielectric loss and ac conductivity was measured as a function of frequency in the range 5 kHz to 1 MHz and temperature range 20 • C to 275 • C. Dielectric studies show a transition peak at temperature 240 • C. This transition peak is further supported by thermal and IR studies. The nature of the transition can be explained by the relation (1/ε − 1/ε max ) = A (T − T c ) γ and is reported to be diffused. The variation of ac conductivity with temperature and frequency has been reported and is represented by the relation σ ac = Aω s . The saturation polarization (P s ), remanent polarization (P r ) and coercive field (E c ) of the polarization -electric field hysteresis are reported for the material. The material (SmT) is proposed to be ferroelectric.

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Dielectric, ferroelectric and optical behaviour of terbium hydrogen tartrate trihydrate crystals

Want

Samad

2014

J Mater Sci

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Dielectric, Ferroelectric and Thermal Studies of Gel Grown Yttrium Tartrate (YT) Crystals

Cited by 13 publications

References 35 publications

Synthesis, crystal structure, spectral, dielectric characteristics and conduction mechanism of two novel carboxylates of 1-benzhydrylpiperazine

Synthesis, crystal structure, spectral, dielectric characteristics and conduction mechanism of two novel carboxylates of 1-benzhydrylpiperazine

Dielectric and Ferroelectric Studies on Gel Grown Samarium Tartrate (SmT) Crystals

Dielectric, ferroelectric and optical behaviour of terbium hydrogen tartrate trihydrate crystals

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