Chawla, , Santa and -, Ravishanker and -, Rajkumar and Khan, A. F. and Kotnala, R. K. (2013) Co-precipitation synthesis and photoluminescence properties of K2GdZr (PO4)(3):Eu3+-a deep red luminomagnetic nanophosphor. Journal of Luminescence , 136. 328-333. ISSN 0022-2313

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Abstract

Nanoparticles of Eu3+ activated K2GdZr(PO4)(3) has been successfully synthesized by controlled inclusive co-precipitation method in high alkaline environment to enable complex crystalline phase formation. Much enhanced deep red luminescence, broadened emission bands with unusually prominent D-5(0)-F-7(4) transition at 699 nm are defining characteristics of the nanoparticles compared to bulk counterpart synthesized by solid state reaction route. Among various excitation pathways such as charge transfer from O2--Eu3+, Gd3+-Eu3+, the direct excitation of Eu3+ at 394 nm is the most effective as revealed by photoluminescence and time resolved studies. Occurrence and variation of superparamagnetism in undoped and Eu3+ doped nanoparticles indicate the role of unpaired 4f electron spin of Gd3+ in making the nanoparticles superparamagnetic. A room temperature cost effective synthesis process of Eu3+ doped multimetallic complex phosphate supermagnetic nanophosphor can pave way for applications requiring such functionality.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s Elsevier
Subjects:	Optics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:24
Last Modified:	19 Aug 2026 10:24
URI:	https://npl.csircentral.net/id/eprint/3306

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