Growth and characterization of ferroelectric glycine phosphite single crystals

• Published in: Journal of crystal growth Vol. 226; no. 2; pp. 287 - 293
• Main Authors: Deepthy, A., Bhat, H.L.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.06.2001; Elsevier
• Subjects: A1. Characterization; A1. Solubility; A2. Growth from solutions; A2. Single crystal growth; B2. Ferroelectric materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Growth from solutions; Materials science; Methods of crystal growth; physics of crystal growth; Physics; Polymers; organic compounds; B2. Ferroelectric materials; A2. Growth from solutions; A1. Characterization; A2. Single crystal growth; A1. Solubility; Vickers hardness; Organic cation; Dielectric properties; Experimental study; Microhardness; Thermal stability; Characterization; Thermal properties; Inorganic acids; α-Aminoacid; Monocrystals; Inorganic anion; Ferroelectric materials; Phosphites; Aqueous solutions; Crystal growth from solutions; Crystal morphology; Organic compounds
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/S0022-0248(01)01365-3

Single crystals of a recent ferroelectric material, glycine phosphite were grown from aqueous solution employing the techniques of slow cooling and controlled evaporation. Powder X-ray diffraction studies as well as thermal analysis were carried out on the grown crystals. The morphology of the crystal has been determined using contact and optical goniometry. The mechanical hardness of the crystal was evaluated by Vickers indentation method. Thickness dependence of the dielectric properties has been investigated and the results can be interpreted in terms of a surface layer of lower dielectric constant.