Exchange coupling and magnetic behavior of SmCo5-xSnx alloys

J. Mater. Sci. Technol. ›› 2011, Vol. 27 ›› Issue (3): 218-222.

Exchange coupling and magnetic behavior of SmCo5-xSnx alloys

Hamid Zaigham¹,Fazal. Ahmad Khalid²

1. Ghulam Ishaq Khan Institute of Engineering Sciences and Technology
2. Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology

收稿日期:2010-05-14 修回日期:2010-11-08 出版日期:2011-03-28 发布日期:2011-03-21
通讯作者: Hamid Zaigham

Exchange Coupling and Magnetic Behavior of SmCo_5-xSn_x Alloys

Hamid Zaigham, F. Ahmad Khalid

Faculty of Materials Science and Engineering, GIK Institute of Engineering Sciences and Technology, Topi, KPK, Pakistan

Received:2010-05-14 Revised:2010-11-08 Online:2011-03-28 Published:2011-03-21
Contact: Hamid Zaigham

摘要/Abstract

摘要： Exchange coupling and magnetic properties of SmCo5 alloys containing different amounts of Sn have been investigated in sintered magnets. X-ray diffraction analysis revealed formation of 2:17 and 2:7 phases in 1:5 matrix. Exchange coupling mechanism was evaluated by switching field distribution, dc-demagnetization and magnetization curves as function of reverse applied field. Energy product of 7.4 MGOe (59.2kJ/m3), remanence magnetization to maximum magnetization ratio of 0.97 and remanence coercivity to intrinsic coercivity ratio of 1.75 was achieved for 0.2 at% Sn.

Abstract: Exchange coupling and magnetic properties of SmCo₅ alloys containing different amounts of Sn were investigated in sintered magnets. X-ray diffraction analysis revealed the formation of Sm₂Co₁₇ and Sm₂Co₇ phases in SmCo₅ matrix. Exchange coupling mechanism was evaluated by switching field distribution, dc-demagnetization and magnetization curves as function of reverse applied field. Energy product of 59.2 kJ/m³ (7.4 MGOe), remanent magnetization to maximum magnetization ratio of 0.97 and remanence coercivity to intrinsic coercivity ratio of 1.75 were achieved for 0.2 at.% Sn.

Key words: Nanocomposite magnet, Nanocrystalline phases, Sintering, Exchange interactions

Hamid Zaigham Fazal. Ahmad Khalid. Exchange coupling and magnetic behavior of SmCo5-xSnx alloys[J]. J. Mater. Sci. Technol., 2011, 27(3): 218-222.

Hamid Zaigham, F. Ahmad Khalid. Exchange Coupling and Magnetic Behavior of SmCo_5-xSn_x Alloys[J]. J Mater Sci Technol, 2011, 27(3): 218-222.

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Exchange coupling and magnetic behavior of SmCo5-xSnx alloys

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Exchange Coupling and Magnetic Behavior of SmCo_5-xSn_x Alloys