Synthesis and Characterization of Fe-Doped CdSe Nanoparticles as Dilute Magnetic Semiconductor

被引：35

作者：

Singh, Jaspal ^{[1
]}

Verma, N. K. ^{[1
]}

机构：

[1] Thapar Univ, Nano Res Lab, Sch Phys & Mat Sci, Patiala 147004, Punjab, India

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2012年 / 25卷 / 07期

关键词：

DMS; Ferromagnetism; Nanoparticles; Fe-doped CdSe; FERROMAGNETISM; ZNO;

D O I：

10.1007/s10948-012-1631-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cd1-x Fe (x) Se (0a parts per thousand currency signxa parts per thousand currency sign0.1) nanoparticles were synthesized by hydrothermal method. The solubility limit of Fe in CdSe nanoparticles was found to be less than 6 % as obtained from X-ray diffraction (XRD) study. With the increase in doping concentration at and above it, secondary phase of FeSe2 starts appearing. The presence of Cd, Se, and Fe has been confirmed by energy dispersive X-ray spectroscopy (EDS). The increase in band gap value has been confirmed by UV-visible spectra and the variation in emission intensity of photoluminescence (PL) measurements further indicates the incorporation of Fe in CdSe nanoparticles. Transmission electron microscopy (TEM) reveals the spherical nature of synthesized nanoparticles, and the particle size decreases with increasing Fe doping concentration. Fourier transform Infrared spectra (FTIR) confirm the capping of sodium dodecyl sulfate (SDS) surfactant on pure and Fe-doped CdSe nanoparticles. The synthesized nanoparticles show room-temperature ferromagnetic behavior, and the saturation magnetization value was found to increase with Fe doping concentration.

引用

页码：2425 / 2430

页数：6

共 33 条

[1] Structure and magnetism of Fe-doped SnO2 nanoparticles [J].

Adhikari, R. ;

Das, A. K. ;

Karmakar, D. ;

Rao, T. V. Chandrasekhar ;

Ghatak, J. .

PHYSICAL REVIEW B, 2008, 78 (02)

[2] Magnetism of ZnO nanoparticles doped with 3d cations prepared by a solvothermal method [J].

Alaria, J. ;

Venkatesan, M. ;

Coey, J. M. D. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)

[3] Challenges for semiconductor spintronics [J].

Awschalom, David D. ;

Flatte, Michael E. .

NATURE PHYSICS, 2007, 3 (03) :153-159

[4] Mn2+-Doped CdSe Quantum Dots: New Inorganic Materials for Spin-Electronics and Spin-Photonics [J].

Beaulac, Remi ;

Archer, Paul I. ;

Ochsenbein, Stefan T. ;

Gamelin, Daniel R. .

ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (24) :3873-3891

[5] THEORY OF MAGNETIC-SUSCEPTIBILITY OF TETRAHEDRAL SEMICONDUCTORS [J].

CHADI, DJ ;

WHITE, RM ;

HARRISON, WA .

PHYSICAL REVIEW LETTERS, 1975, 35 (20) :1372-1375

[6] Theory of spintronic materials [J].

Chelikowsky, James R. ;

Kaxiras, Efthimios ;

Wentzcovitch, Renata M. .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2006, 243 (09) :2133-2150

[7] Tuning the performance of hybrid organic/inorganic quantum dot light-emitting devices [J].

Coe-Sullivan, S ;

Woo, WK ;

Steckel, JS ;

Bawendi, M ;

Bulovic, V .

ORGANIC ELECTRONICS, 2003, 4 (2-3) :123-130

[8]

Cullity B. D., 1978, ELEMENTS XRAY DIFFRA

[9] Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].

Dietl, T ;

Ohno, H ;

Matsukura, F ;

Cibert, J ;

Ferrand, D .

SCIENCE, 2000, 287 (5455) :1019-1022

[10] Mn-doped ZnO nanotubes: from facile solution synthesis to room temperature ferromagnetism [J].

Duan, Jinxia ;

Wang, Hao ;

Wang, Hanbin ;

Zhang, Jun ;

Wu, Shan ;

Wang, Yi .

CRYSTENGCOMM, 2012, 14 (04) :1330-1336

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