Irradiation effects on domain dynamics in ferroelectric glycine phosphite

Vanishri, S.; Reddy, J.N. Babu; Bhat, H. L.

doi:10.1063/1.2537695

Cited by 12 publications

(7 citation statements)

References 22 publications

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“…It crystallizes in the monoclinic system with space group P2 1 /a. Few reports are available previously on the crystallization of glycine phosphite and characterization of some of its specific properties [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, growth, morphology and characterization of ferroelectric glycine phosphite single crystals

Devi

Srinivasan

2011

Cryst. Res. Technol.

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Glycine phosphite (NH 3 CH 2 COO.H 3 PO 3 ), a potential ferroelectric material, was grown as single crystals from aqueous solutions by slow evaporation and slow cooling methods. Laboratory synthesized title compound was purified by recrystallization method and confirmed by Fourier transform infrared and Laser Raman studies. Temperature dependent solubility in double distilled water in the range between 288 and 328 K was determined by gravimetric method. Morphological importance of various growth faces were studied by optical goniometry. Powder x-ray diffraction study performed on the grown crystals confirms the crystal system and lattice parameters of the unit cell. Optical transparency of the grown crystals in the ultraviolet -visible -near infrared region was studied by spectroscopic method. Thermal stability of the grown crystals in the temperature region above ambient until melting was studied using differential scanning calorimetry.

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Section: Introductionmentioning

confidence: 99%

Synthesis, growth, morphology and characterization of ferroelectric glycine phosphite single crystals

Devi

Srinivasan

2011

Cryst. Res. Technol.

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“…Irradiation can significantly shift the phase transition point (Boströ m et al, 2020) or a phase transition can be completely suppressed by radiation damage (Morgan et al, 2018). For the title salt, the effect of X-ray Cu K radiation on the dielectric properties has been reported (Vanishri & Bhat, 2005;Vanishri et al, 2007) and associated with radiation-induced PO 3 2À radicals. Much harder -radiation has been also proven to affect the ferroelectric behaviour of the title salt (Morawski & Pawlowski, 1998).…”

Section: Introductionmentioning

confidence: 99%

Phase transition in an organic ferroelectric: glycinium phosphite, with and without X-ray radiation damage

Bogdanov

Zakharov

Chernyshov

et al. 2021

Acta Crystallogr B Struct Sci Cryst Eng Mater

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Thermal evolution of an organic ferroelectric, namely, glycinium phosphite, was probed by multi-temperature single-crystal diffraction using synchrotron radiation and also by a similar experiment with a laboratory X-ray diffractometer. Both series of measurements showed a transition from the paraelectric to the ferroelectric state at nearly the same temperature, T c = 225 K. Temperature evolution of the unit-cell parameters and volume are drastically different for the synchrotron and laboratory data. The latter case corresponds to previous reports and shows an expected contraction of the cell on cooling. The data collected with the synchrotron beam show an abnormal nonlinear increase in volume on cooling. Structure analysis shows that this volume increase is accompanied by a suppression of scattering at high angles and an apparent increase of the anisotropic displacement parameters for all atoms; we therefore link these effects to radiation damage accumulated during consecutive data collections. The effects of radiation on the formation of the polar structure of ferroelectric glycinium phosphite is discussed together with the advantages and drawbacks of synchrotron experimentation with fine temperature sampling.

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“…Glycine phosphite crystals were grown from solution and the mechanism behind their growth, phase transition, mechanical properties and doping effect has been explained [18][19][20]. Several macroscopic and microscopic properties of GPI and the effect of X-ray irradiation have been investigated by researchers [21,22], to elucidate the mechanism underlying the ferroelectric properties. However, in the present work, a systematic approach was made to grow bulk single crystals of GPI by solvent evaporation as well as temperature-lowering methods.…”

Section: Introductionmentioning

confidence: 99%