Studies on vibrational, dielectric, mechanical and thermal properties of organic nonlinear optical co-crystal: 2,6-diaminopyridinium4-nitrophenolate4- nitrophenol

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • Periyar University
  • National Institute of Technology Tiruchirappalli

Kuvaus

This article presents the vibrational, dielectric, mechanical and thermal properties of 2,6-diaminopyridine4-nitrophenolate4-nitrophenol co-crystals (DAP:NP) grown by slow evaporation solution growth technique. It crystallizes in orthorhombic noncentrosymmetric space group Pna2 1 with cell dimension a=10.86 Å, b=12.00 Å and c=13.53 Å; α=β=γ=90°with V=1764 Å 3. Functional groups present in the molecule have been identified from FTIR study. Dielectric constant (ε r), dielectric loss (tanδ) and ac conductivity (σ ac) behaviors of the crystals have been studied at different temperatures. Presence of piezoelectric resonance peaks at lower frequency in dielectric measurements may increase the electro-optic coefficient of the crystals. Mechanical strength and its parameters of the grown crystals have been determined by Vickers microhardness test. TG/DTA analysis shows the melting point of the material is 150°C and it undergoes two stages of decomposition.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1119-1123
Sivumäärä5
JulkaisuPhysica B: Condensed Matter
Vuosikerta407
Numero7
TilaJulkaistu - 1 huhtikuuta 2012
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 37761355