Evaluation of structural, optical, and magnetic properties of Gd doped MnFe2O4 nanoparticles

被引：5

作者：

Nguyen, Luu Huu ^{[1
,2
]}

Tam, Le The ^{[3
]}

Nam, Nguyen Hoai ^{[4
]}

Tung, Do Khanh ^{[4
]}

Truong, Nguyen Xuan ^{[4
,5
]}

Tuan, Dinh Van ^{[6
]}

Quynh, Nguyen Van ^{[7
]}

Tri, Nguyen Le Minh ^{[8
,9
]}

Phong, Pham Thanh ^{[1
,2
]}

Nam, Pham Hong ^{[4
,5
]}

机构：

[1] Van Lang Univ, Sci & Technol Adv Inst, Lab Magnetism & Magnet Mat, Ho Chi Minh City, Vietnam

[2] Van Lang Univ, Fac Appl Technol, Sch Technol, Ho Chi Minh City, Vietnam

[3] Vinh Univ, 182 Le Duan, Vinh, Vietnam

[4] Vietnam Acad Sci & Technol, Inst Mat Sci, 18 Hoang Quoc Viet, Hanoi, Vietnam

[5] Vietnam Acad Sci & Technol, Grad Univ Sci & Technol, 18 Hoang Quoc Viet, Hanoi, Vietnam

[6] Elect Power Univ, 235 Hoang Quoc Viet, Hanoi, Vietnam

[7] Univ Sci & Technol Hanoi USTH, Vietnam Acad Sci & Technol, 18 Hoang Quoc Viet, Hanoi, Vietnam

[8] Ton Duc Thang Univ, Adv Inst Mat Sci, Lab Adv Mat Chem, Ho Chi Minh City, Vietnam

[9] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City, Vietnam

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 24期

关键词：

Gd doped; Magnetic properties; Optical properties; FE3O4; NANOPARTICLES;

D O I：

10.1016/j.ceramint.2023.10.092

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, the MnFe2O4 doped Gd (MnGdxFe2-xO4 with x = 0, 0.125, 0.25, and 0.5) magnetic nanoparticles were successfully synthesized and revealed the significant effect of Gd content on structural, optical, and mag-netic properties. The replacement of Fe3+ ions by ion Gd3+ ions changed the crystallite size from 8.2 nm (x = 0) to 13.5 nm (x = 0.5). The band gap of Gd-doped MnFe2O4 increased with an increase of the x value. The magnetic curves showed that saturation magnetization (MS) and magnetic anisotropy (K) decreased simulta-neously with the concentration of Gd3+ ions. The MS value reduced from 54.0 emu/g (MnFe2O4) to 35.4 emu/g (MnGd0.5Fe1.5O4). The K value dropped from 50.4 kJ/m3 (MnGd0.125Fe1.875O4) to 12.3 kJ/m3 (MnGd0.5Fe1.5O4). The substantial reliance of magnetic anisotropy on the doping concentration, namely this large change in K with a little change in size (8.2 nm-13.5 nm), demonstrated that doping is a suitable method for modifying the values of magnetic anisotropy of materials.

引用

页码：40981 / 40989

页数：9

共 48 条

[1] Superparamagnetic relaxation evidences large surface contribution for the magnetic anisotropy of MnFe204 nanoparticles of ferrofluids [J].