Optical and Magnetic Properties of Mn-Doped ZnS Nanoparticles Synthesized by a Hydrothermal Method

Author

Hong Van Bui ; Hoang Nam Nguyen ; Nam Nhat Hoang ; Thanh Trung Truong ; Van Ben Pham

Author_Institution

Vietnam Nat. Univ.-Hanoi Univ. of Sci., Hanoi, Vietnam

Volume

50

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

1

Lastpage

4

Abstract

The Mn-doped ZnS nanoparticles with T²_d - F4̅3m cubic structure and an average crystalline size of about 16 nm were synthesized using the hydrothermal method at 220 °C for 15 h from Zn(CH₃COO)₂ (0.1M), Mn(CH₃COO)₂ (0.01M), and Na₂S₂O₃ (0.1 M) as the precursors. The appearance of characteristic photoemission bands of Mn²⁺ (3d⁵) ions at 390, 430, 467, and 493 nm in the photoluminescence excitation spectra while monitoring the yellow-orange band at 585 nm showed that the Mn²⁺ (3d¹⁰) ions substituted for Zn²⁺ (3d¹⁰) ions in ZnS matrix and caused the ferromagnetism of Mn-doped ZnS nanoparticles. The dependence of photoluminescence, photoluminescence excitation spectra, and magnetization curves on Mn content and the wavelength of excitation radiation were reported.

Keywords

II-VI semiconductors; ferromagnetic materials; liquid phase deposition; magnetisation; manganese; nanofabrication; nanoparticles; photoluminescence; semiconductor growth; semimagnetic semiconductors; wide band gap semiconductors; zinc compounds; Hydrothermal Method; T²_d - F4̅3m cubic structure; ZnS:Mn; characteristic photoemission band; crystalline size; ferromagnetism; magnetic properties; magnetization curve; nanoparticles; optical properties; photoluminescence excitation spectra; temperature 220 degC; time 15 h; yellow-orange band; Absorption; Crystals; Ions; Magnetic properties; Manganese; Nanoparticles; Photoluminescence; Nanoparticle; photoluminescence; photoluminescence excitation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2300187

Filename

6832863