Low field magnetic interactions in the transition metals doped CuS quantum dots

被引：15
|
作者：
Sharma, Lalit Kumar [1 ]
Kar, Manoranjan [2 ]
Choubey, Ravi Kant [3 ]
Mukherjee, Samrat [4 ]
机构：
[1] Amity Univ, Dept Phys, Patna Campus, Patna 801503, Bihar, India
[2] Indian Inst Technol, Dept Phys, Bihta 801106, Bihar, India
[3] Amity Univ, Amity Inst Appl Sci, Dept Appl Phys, Noida 201313, Uttar Pradesh, India
[4] Natl Inst Technol, Dept Phys, Patna 800005, Bihar, India
来源：
CHEMICAL PHYSICS LETTERS | 2021年 / 780卷
关键词：
Dilute magnetic semiconductor; Blue shift; Copper vacancies; Low field magnetic interactions; COPPER SULFIDE NANOPARTICLES; HOLLOW SPHERES; THIN-FILMS; GROWTH; SENSOR;
D O I：
10.1016/j.cplett.2021.138902
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Polyvinlypyrrolidone (PVP) capped and magnetic transition metals (TM = Fe, Co and Cr) doped CuS quantum dots (Cu1-xTMxS; x = 0.02 & 0.04) were synthesized by low entropy facile chemical co-precipitation method. The structural, optical and magnetic characterizations of the synthesized QDs were done by using X-ray diffraction (XRD) technique, UV-Vis-NIR absorption spectroscopy, photoluminescence (PL) spectroscopy and super-conducting quantum interference device (SQUID) respectively. The low field non-linearity and the presence of coercivity in the M-H loops indicate the presence low field magnetic (spin-spin) interactions between the doped cations.
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页数：7
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