研究目的
Investigating the modification of Dy3+ on glass forming, structure, UV–Vis, FT-IR, Raman and photoluminescence spectra and properties of diamagnetic glasses for potential applications in high energy physics, general radiation and magneto optical sensing systems.
研究成果
The study concluded that Dy3+ doping modifies the glass structure and enhances properties such as thermal stability, microhardness, and magneto-optical activity. The glass doped with 1%Dy2O3 exhibited the best performance, making it promising for magneto-optical applications.
研究不足
The study found that melts with Dy2O3 content beyond 5% prefer to crystallize, not to form a glassy matrix, limiting the maximum Dy2O3 content for glass formation.
1：Experimental Design and Method Selection:
The study involved the fabrication of Dy3+ doped diamagnetic glasses using a melt quenching technique. The glasses' properties were investigated through XRD, Raman spectra, DSC, Vicker's hardness, and Verdet constant measurements.
2：Sample Selection and Data Sources:
Glasses with compositions of 10GeO2 – 30PbO – 50Bi2O3 – (10-x)B2O3 –xDy2O3 (x = 0, 0.5, 1, 2, 3, 5 M %) were prepared.
3：5, 1, 2, 3, 5 M %) were prepared. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Philips PW 1343 X-ray diffractometer, Perkin-Elmer DSC, Varian Cary500 spectrophotometer, MKI Renishaw Raman spectroscopy, Varian Cary 500 UV–VIS spectrophotometer, and a home-made optical bench for Verdet constant measurement.
4：Experimental Procedures and Operational Workflow:
The mixed powder was melted at 1100 °C for 1 h, cast on a brass plate, annealed at 300 °C for 2 h, and then cut and polished for measurements.
5：Data Analysis Methods:
The data were analyzed using Judd-Ofelt theory for luminescence properties, and the Verdet constant was calculated based on the Faraday rotation effect.
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DSC
Perkin-Elmer DSC
Perkin-Elmer
Testing Tg and crystallization temperature onset (Tx)
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Thermo-mechanical analysis
Perkin Elmer TMA-7
Perkin Elmer
Measuring thermal expansion coefficient
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Photo detector
Ophir PD300
Ophir
Measuring the power of the output beam
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X-ray diffractometer
Philips PW 1343 X-ray diffractometer (X'pert MPD)
Philips
Recording X-ray diffraction at room temperature
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Prism coupling method
Metricon 2010
Metricon
Measuring refractive indices (n) at three wavelengths (532 nm, 633 nm and 650 nm)
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Vicker's hardness tester
Testing Vicker's hardness
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Fourier transforms infrared spectra
Varian Cary500 spectrophotometer
Varian
Recording FT-IR spectra of 400 - 4000 cm?1
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Raman spectroscopy
MKI Renishaw Raman spectroscopy
Renishaw
Recording Raman spectra of 50-1100 cm?1
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UV–VIS spectrophotometer
Varian Cary 500
Varian
Recording UV-VIS spectra of 200 nm–1100 nm
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Teslameter
PHYWE, 13610–93
PHYWE
Measuring the magnetic field density
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