Abstract
Glasses, with composition 10Na2O–10Bi2O3–20B2O3–(60-x)SiO2: Cr2O3 (0 ≤ x ≤ 0.25), synthesized by melt quenching procedure were characterized by XRD and conducted optical absorption, EPR, and FTIR spectroscopic techniques. The optical absorption spectra portrayed a strong absorption peak at about 642 nm owing to 4A2g→4T2g (F) with a couple of envelopes at about 681 and 712 nm due to 4A2g→2T1g and 4A2g→2Eg transitions, respectively. All doped samples showed two EPR signals, each at low and high magnetic fields caused by the chromium ion isolation and interchange interactions of Cr3＋-Cr3＋ ions, respectively. FTIR spectra have revealed the behaviour of various structural units for different concentration of Cr2O3 in the glass matrix. With the assistance of spectroscopic studies, the observed fall in the rigidity of the samples with higher concentrations of Cr2O3 is attributed to presence of high concentrations of octahedrally resided Cr3＋ ions, which gain more suitability for lasing action.
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 callDisclaimer: 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.
