Synthesis and Characterization of FePt/NiO Core-Shell Nanoparticles

被引：16

作者：

Zeynali, Hossein ^{[1
]}

Sebt, Seyed Ali ^{[1
]}

Arabi, Hadi ^{[2
]}

Akbari, Hossein ^{[3
]}

Hosseinpour-Mashkani, Seyed Mostafa ^{[4
]}

Rao, K. Venkateswara ^{[4
]}

机构：

[1] Islamic Azad Univ, Dept Phys, Sci & Res Branch, Tehran, Iran

[2] Univ Birjand, Dept Phys, Magnet & Superconducting Res Lab, Birjand, Iran

[3] Islamic Azad Univ, Dept Phys, Ardabil Branch, Ardebil, Iran

[4] Jawaharlal Nehru Technol Univ, IST, Ctr Nanosci & Technol, Hyderabad 500085, Andhra Pradesh, India

来源：

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS | 2012年 / 22卷 / 06期

关键词：

Polyol process; Sintering; FePt/NiO nanoparticles; Core-shell; Coercivity; MAGNETIC-PROPERTIES;

D O I：

10.1007/s10904-012-9765-x

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Monodisperse FePt nanoparticles were successfully synthesized using the chemical polyol process. Annealing at the high temperatures is required to achieve the hard ferromagnetic behavior with L1(0) phase. Annealing causes the surfactant surrounding particles to be decomposed. Under such circumstances, FePt particles are agglomerated, and their size increases. In this research, NiO oxide particle with a high melting point was used for the first time as the shell around FePt core particles to prevent agglomeration. As a result, coercivity, H-c, of FePt and FePt/NiO nanoparticles after annealing at 750 A degrees C are equal to 10 and 7 kOe, respectively.

引用

页码：1314 / 1319

页数：6

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