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.

引用

页数：7

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