Magnetic Properties and GMR of Sputtered Permalloy/Au Multilayers

• Authors: B. Szymański , F. Stobiecki
• Languages of publication: EN

Abstracts

EN

We report on structural, magnetic, and GMR properties of permalloy/Au multilayers where permalloy = Ni_{83}Fe_{17}, deposited by face-to-face sputtering onto Si(111) substrate. X-ray diffraction studies confirmed a good structural quality of our multilayers. The samples were characterised with vibrating sample magnetometer, longitudinal magnetooptical Kerr effect and giant magnetoresistance measurements. It was determined that our multilayers are magnetically very soft with H_{c} ≈ 1 Oe and show uniaxial anisotropy with H_{K} ≈ 5 Oe. For gold sublayer thickness d_{Au} close to 1.1 nm the antiferromagnetic coupling is present in very narrow Au thickness range (≈ 0.2 nm). Despite a good structural quality of samples relatively small giant magnetoresistance value (1.2% at room temperature) was found. It is due to non-perfect aniferromagnetic coupling caused by pinholes.

Keywords

EN

75.70.-i; 75.70.Pa; 68.55.-a

Discipline

• 75.70.-i: Magnetic properties of thin films, surfaces, and interfaces(for magnetic properties of nanostructures, see 75.75.-c)
• 68.55.-a: Thin film structure and morphology(for methods of thin film deposition, film growth and epitaxy, see 81.15.-z)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 3
• Pages: 535-538

Dates

published

2000-03

Contributors

author

B. Szymański

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

F. Stobiecki

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.97.535