2009
DOI: 10.1016/j.jmmm.2009.01.008
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Synthesis and characterization of CoxZn1−xFe2O4 magnetic nanoparticles via a PEG-assisted route

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Cited by 195 publications
(60 citation statements)
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“…This characteristic was also reported for the Co 0.5 Zn 0.5 Fe 2 O 4 nanospheres prepared via the solvothermal method, and the saturation magnetization of the nanoparticles was close to that observed for the nanospheres at an applied field of 5 kOe (64.6 emu·g −1 ) [18]. The saturation magnetization of these samples was smaller than that observed for the bulk material though (∼80 emu·g −1 ) [12,14]. These differences in the magnetization value (such as saturation magnetization, remanent magnetization, and coercivity) between the nanosized ferrites and bulk ferrites can be attributed to the finite size effect [19].…”
Section: Resultssupporting
confidence: 83%
See 1 more Smart Citation
“…This characteristic was also reported for the Co 0.5 Zn 0.5 Fe 2 O 4 nanospheres prepared via the solvothermal method, and the saturation magnetization of the nanoparticles was close to that observed for the nanospheres at an applied field of 5 kOe (64.6 emu·g −1 ) [18]. The saturation magnetization of these samples was smaller than that observed for the bulk material though (∼80 emu·g −1 ) [12,14]. These differences in the magnetization value (such as saturation magnetization, remanent magnetization, and coercivity) between the nanosized ferrites and bulk ferrites can be attributed to the finite size effect [19].…”
Section: Resultssupporting
confidence: 83%
“…To date, many methods have been developed to prepare Co 1-x Zn x Fe 2 O 4 nanopowders, such as the coprecipitation method [6,8,10], the standard solid-state reaction technique [7,11], the forced hydrolysis method [12], the microwavehydrothermal method [13], and the hydrothermal method [14]. However, research on the template-assisted synthesis of Co 1-x Zn x Fe 2 O 4 nanoparticles is comparatively limited.…”
Section: Introductionmentioning
confidence: 99%
“…PEG is a short-chain polymer with a uniform and ordered chain structure, which can be easily adsorbed on the surface of metal oxide colloid. This strong interaction kinetically decreases the activities of metal oxide colloid, and thus control the growth rates of various crystallographic facets of crystals which can control the morphology [22][23][24][25] . In this research, regular and spherical particles were obtained at low and high concentrations of PEG (in all A, B, and C sample series), respectively.…”
Section: Patilmentioning
confidence: 99%
“…Hình 3 trình bày giá trị hằng số mạng phụ thuộc nồng độ Zn 2+ ion pha tạp, cho thấy rằng giá trị hằng số mạng tăng tuyến tính từ 8,394 Å đến 8,427 Å khi tăng nồng độ ion Zn 2+ trong mạng tinh thể Co 1-x Zn x Fe 2 O 4 từ 0,0 đến 0,7. Xu hướng này phù hợp với một số công bố [9], trong đó các tác giả đã cho rằng bán kính ion của Zn 2+ (0,74 Å) lớn hơn bán kính của ion Co 2+ (0,65 Å) là nguyên nhân làm tăng hằng số mạng tinh thể của Co 1-x Zn x Fe 2 O 4 . Ngoài ra mật độ hạt tính từ nhiễu xạ tia X cũng có thể được xác định bởi biểu thức [14]: (3) ở đây, M là khối lượng phân tử của mẫu và N là số Avogadro.…”
Section: Các đặC Trư Cấu Trúcunclassified