Systematic investigation and comparison of oxalic acid dihydrate, ammonium oxalate hydrate and ammonium hydrogen oxalate oxalic acid dihydrate single crystals

Mahendra, K and Fernandes, BJ and Pattar, J and Pujar, S and Nagaraja, BS and Ramesh, KP and Udayashankar, NK (2023) Systematic investigation and comparison of oxalic acid dihydrate, ammonium oxalate hydrate and ammonium hydrogen oxalate oxalic acid dihydrate single crystals. In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 288 .

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Abstract

Semiorganic crystals are hybrid materials that have captured the interest of researchers due to their improved material characteristics and applications. In the current work, single crystals of oxalic acid dihydrate (OAD), Ammonium oxalate hydrate (AHO), and Ammonium hydrogen oxalate oxalic acid dihydrate (AHOOD) were grown using a slow evaporation method. Single crystal and powder XRD measurements were carried out to elucidate their unit cell parameters, crystal system, and structural information. To comprehend the interplay of light and matter, optical investigations like UV–Vis Spectroscopy and photoluminescence studies were performed. Interaction of ammonium with oxalic acid, and thus formed crystals, was investigated using impedance spectroscopy. Detailed dielectric parameters such as dielectric constant, dielectric loss, impedance, conductivity, and electric modulus were explored as a function of frequency. Vickers hardness test was used to calculate the hardness, Meyer's number, brittleness, and fracture toughness. The crystals were determined to be of the hard materials group.

Item Type:	Journal Article
Publication:	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Keywords:	Dielectric losses; Fracture toughness; Hybrid materials; Hydrates; Hydration; Hydrogen; Oxalic acid; Rare earths; Vickers hardness, 'current; Ammonium hydrogen oxalate oxalic acid dihydrate; Ammonium oxalate hydrate; Hybrids material; Material application; Material characteristics; Oxalic acid dihydrate; Semiorganic crystal; Slow evaporation method, Single crystals
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	09 Jan 2023 06:22
Last Modified:	09 Jan 2023 06:22
URI:	https://eprints.iisc.ac.in/id/eprint/78890

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