Spectroscopic and Magnetic properties of Neodymium doped in GdPO4 sub-micron-stars prepared by Solvothermal Method

Chidangil, Santhosh (2016) Spectroscopic and Magnetic properties of Neodymium doped in GdPO4 sub-micron-stars prepared by Solvothermal Method. Journal of Alloys and Compounds, 27. pp. 668-673. ISSN 09258388

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Abstract

Neodymium-doped gadolinium orthophosphate (GdPO4:Nd3+) luminomagnetic sub-micron-stars were prepared by solvothermal method using metal nitrates and phosphoric acid. Monoclinic star shaped in six lobed sub-micron-stars with 600 nm length is obtained with uniform particle size distribution. After heat-treatment at 800 °C for 1 h in air, the stars separate into isolated petal shaped particles and show characteristic emission bands of Nd3+ with the strongest emission at 1064 nm. The emission intensities and fluorescence decay times are dependent on the Nd3+ concentration with the highest emission intensity and longest fluorescence decay time of 311 μs at 1064 nm with 0.5 mol% Nd3+. Under 808 nm excitation with 12 W/cm2 power density a quantum yield of 9% was obtained for the 1.0 mol% Nd3+. The presence of paramagnetic Gd3+ gives magnetic properties to the phosphor with a calculated magnetic moment of 1510 and 107,965 Bohr magneton at 300 and 5 K, respectively

Item Type: Article
Uncontrolled Keywords: Multifunctional materials; Optical properties; Magnetic properties; Sub-micron-stars; Rare earths
Subjects: Departments at MU > Atomic Molecular Physics
Depositing User: KMC Library
Date Deposited: 02 Jan 2018 10:09
Last Modified: 02 Jan 2018 10:09
URI: http://eprints.manipal.edu/id/eprint/150414

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