Abstract
Single crystals of manganese malonate dihydrate have been grown by the controlled diffusion of ionic species in hydrosilica gel. The crystals are found to be antiferromagnetic and optically nonlinear. X-ray diffraction studies on single crystals showed that the compound crystallizes in the orthorhombic system with a non centrosymmetric space group Pca21. The unit cell parameters are a=8.309Å, b=9.590Å, c=7.327Å. The UV–vis spectrum indicates good transparency in the visible region. The optical band gap of the material was estimated using diffuse reflectance spectroscopy (DRS). The second harmonic generation (SHG) efficiency of the material, evaluated using Kurtz and Perry powder test, is comparable with that of standard KDP crystals. Electrical and dielectric properties of the material were investigated over wide frequency and temperature range. The optical nonlinearity and SHG efficiency are attributed to the molecular acentricity and intermolecular hydrogen bonding. Distinctive structural features inclusive of acentric space group, intermolecular hydrogen bonding and bridging through anti–syn and anti–anti malonate groups are accountable for the antiferromagnetism exhibited by the material.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Optik - International Journal for Light and Electron Optics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
