Please use this identifier to cite or link to this item:
標題: Structural and magnetic characterization of Mn/NiFe bilayers with ion-beam-assisted deposition
作者: Chun-Hsien Wu
Chao Zheng
Chun-Cheng Chiu
Palash Kumar Manna
Johan van Lierop
Ko-Wei Lin
Philip W. T. Pong
Project: Japanese Journal of Applied Physics, Volume 57, Number 1S, 01AC04
The exchange bias effect in ferromagnetic (FM)/antiferromagnetic (AF) bilayer structures has been widely investigated because its underlying principle is critical for spintronic applications. In this work, the effect of Ar+ beam bombardment on the microstructural and magnetic properties of the Mn/NiFe thin films was investigated. The in-situ Ar+ bombardment nontrivially promoted the Mn/NiFe intermixing and facilitated the formation of the FeMn phase, accompanied by a remarkable reduction of Mn and NiFe layer thickness. The enhanced Mn/NiFe intermixing greatly disordered the interfacial spins, inhibiting the interfacial exchange coupling and giving rise to a significant decrease of the exchange bias field (H ex). The facilitated Mn/NiFe intermixing effect also dramatically degraded the magnetocrystalline anisotropy of the NiFe crystallites, leading to a notable suppression of the coercivity (H c). These results indicate that both the exchange bias and coercivity of the Mn/NiFe bilayers can be directly affected by the in-situ Ar+ bombardment, offering an effective way to modify the magnetism of the exchange-bias systems.
DOI: 10.7567/JJAP.57.01AC04
Appears in Collections:材料科學與工程學系

Files in This Item:
File Description SizeFormat Existing users please Login
263.pdf1.6 MBAdobe PDFThis file is only available in the university internal network    Request a copy
Show full item record

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.