Magnetic Behaviour of Sm2Co7/Fe/Sm2 CO7，Nanocomposite Trilayers with Cr and Ti Additions

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2009,（3）
• 页码范围: 253-255
• 页数: 3页
• 语种: 英文

摘要

Trilayeredz Sm2 Cor/Fe/Sm2 Co7 spring exchange magnets are fabricated by dc magnetron sputtering on MgO substrates.Very thin layers (0.3-0.7nm) of Cr and Ti are added at the interfaces of the two magnetic phases.The thickness of Sm2Co7 is kept at 2Ohm and Fe at 6nm while the thickness of Cr and Ti are varied as 0.3,0.5,and 0.7nm.The base pressure of sputtering chamber is kept below 10-7 Tort and Ar pressure at 3-8mTorr.The samples are characterized by x-ray diffraction (XRD) and SQUID magnetometer.We report improvement in exchange coupling of nonacomposite magnets by addition of thin layers of Cr at interfaces.