Table 1.

Comparison analysis of thermal, mechanical and dielectric properties of various crystal structures.

S·NO	Details of material prepared	Findings	Author name	Reference
1	By using the traditional solid-state process, LiCoO2 formed.	AC conductivity value measured (10−4 Ω−1cm−1). By examining the temperature dependence of the electrical characteristics, it was demonstrated that the exothermic peak of the thermal analysis occurs at 335 K.	I.B. Slima et al.	[20]
2	Organic-inorganic compound Penta-dimethylammonium-Undecachlorotricadmate (II) [(CH3)2NH2]5Cd3Cl11 hybrid material prepared by classic evaporation method at room temperature.	The properties of thermal, vibrational, optical, and electrical systems were examined.	K. Trabelsi et al.	[21]
3	A solid-state technique was used to create NaCu0.2Fe0.3Mn0.5O2 with a hexagonal form.	Using complex impedance spectroscopy between 101 Hz and 106 Hz at various temperatures (333–453 K), the material's electrical and dielectric characteristics were examined.	I.B. Slima et al.	[22]
4	2-amino-4,6-dimethylpyrimidine 4-nitrophenol (AMP4N) single crystals are grown by slow evaporation solution technique	Studies on third-order nonlinear optics, thermal analysis, and chemical etching were conducted. The AMP4N crystal was proven to be thermally stable up to 120 °C by TG-DTA experiments.	P. Karuppasamy et al.	[23]
5	Monoclinic structured 2-Amino 4-methylpyridinium 3-chlorobenzoate (2A4M3CB) synthesized using slow evaporation solution growth technique	TGA and DTA thermograms validated 2A4M3CB's stability up until its melting point, which was determined to be 184 °C. Vickers Micro Hardness Tester analysis of the crystals' mechanical strength reveals that 2A4M3CB exhibits a reversal indentation size effect.	B. Babu et al.	[24]
6	hexamethylenetetramine 4-nitrophenol monohydrate (HMTNP) solvent evaporation method was used	Tests for photoconductivity, second harmonic generation, and dielectric were done. The lower dielectric constant (εr) of the HMTNP crystal is 9.516 at 393 K.	M. Saravanakumar et al.	[25]
7	monoclinic crystal 2-amino-6-methylpyridinium 2,4-dihydroxybenzoate monohydrate (2A6MDH) organic single crystal was grown by slow evaporation method	The 2A6MDH crystal was discovered to have a thermal stability of 77.8 °C. The generated crystal was a soft category material according to Vickers' hardness examination, suggested for optoelectronic applications.	R. Kaliammal et al.	[26]
8	2-Amino-4-methylpyridinium 2-chloro 4-nitro benzoate (AMPCNB) was synthesized by slow evaporation solution growth method.	The results of a micro-hardness analysis showed that the produced crystals are soft mechanically. Lower dielectric constant readings at higher frequencies indicated that the crystal included less electrically active flaws.	K. Venkatesan et al.	[27]
9	2-amino 5-methylp yridinium 4-methoxybenzoate (2A5MP4MB) have been grown successfully from the aqueous solution by slow evaporation technique.	Received greater thermal stability at 178 °C without deterioration and crystallization of water. Dielectric analysis demonstrated the crystal's typical optical behaviour for photonic applications. According to a microhardness investigation, 2A5MP4MB crystal was a soft material.	T. Murugan et al.	[28]
10	2,3-Dimethyl-N-[2-(hydroxy) benzylidene] aniline (DHBA) using slow evaporation solution growth method in methanol.	The results of the TG/DTA investigation showed that DHBA was thermally stable up to 197 °C. The DHBA had good crystal quality with fewer flaws due to the low amount of dielectric constant/dielectric loss at high frequencies. According to the Vickers microhardness test, the formed crystal had category of soft materials.	B.R. Krishnamoorthy	[29]
11	Triclinic bis(2-amino-6-methyl pyridinium barbiturate) tetrahydrate (2A6MBA) has been grown as a single crystal by slow evaporation solution growth method	The TG-DSC research verified that the material was thermally and chemically stable up to 103.9 °C and that no phase transformation had occurred. Vicker's microhardness demonstrated the crystal's mechanical stability, and the hardness number was computed using several models, while the etching research showed the crystal's flawless structural reliability.	R. Kaliammal et al.	[30]