Roughness and Magnetic Properties of Pt/CO Multilayered Films

1993 ◽  
Vol 313 ◽  
Author(s):  
S. Sumi ◽  
Y. Kusumoto ◽  
Y. Teragaki ◽  
K. Torazawa ◽  
S. Tsunashima ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Input Power ◽  
Perpendicular Anisotropy ◽  
Multilayered Films ◽  
Layer Interface ◽  
Preparation Conditions ◽  
Sputter Deposited

ABSTRACTMagnetic properties and roughness of sputter-deposited Pt/CO films strongly depend on preparation conditions such as rf input power, underlayers and their etching. Large coercivity was obtained by using suitable underlayers such as ZnO and adjusting input power higher for Co and lower for Pt. The coercivity in Pt/CO films seems to depend on the roughness of the surface and/or the layer interface as well as the perpendicular anisotropy.

Magnetic Properties and Crystallography of Selected Co/Pt Multilayers with Rare-Earth Additions

1993 ◽  
Vol 313 ◽  
Author(s):  
G.A. Bertero ◽  
R.L. White ◽  
R. Sinclair
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Cross Section ◽  
Uniaxial Anisotropy ◽  
Amorphous Film ◽  
Perpendicular Anisotropy ◽  
Grain Sizes ◽  
Transmission Electron ◽  
Rare Earth Additions ◽  
Sputter Deposited

ABSTRACTWe have sputter-deposited a series of Pt/CO Multilayers with differing amounts of rare-earth (RE) in an effort to improve the uniaxial perpendicular anisotropy in these structures. The present work investigates the influence on the magnetic properties of Tb and Ho incorporated both at the interfaces of Pt/CO Multilayers and into the Co layers. The uniaxial anisotropy improved significantly only for those multilayers that showed poor perpendicular anisotropy in the undoped state, in particular, those with large (∼30 Å) bilayer periods. High resolution transmission electron microscopy was used to study these multilayers in cross-section. The Multilayer structures present strong [111] texture with grain sizes ranging from 200 to 600 Å. It is found that the RE does not produce a significant change in the growth texture of the multilayers until a critical amount is introduced beyond which the multilayer structure amorphizes resulting in a compositionally modulated amorphous film.

scholarly journals Preparation and Magnetic Properties of Sputter-Deposited Fe-Pt Thin Films with Perpendicular Anisotropy

1997 ◽  
Vol 21 (S_2_PMRC_97_2) ◽  
pp. S2_177-180 ◽  
Author(s):  
Toshio SUZUKI ◽  
Naoki HONDA ◽  
Kazuhiro OUCHI
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Perpendicular Anisotropy ◽  
Sputter Deposited

Magnetic Properties of Rare-Earth/Fe Multilayered Films with Artificial Superstructures

1989 ◽  
Vol 151 ◽  
Author(s):  
Teruya Shinjo ◽  
Ko Mibu ◽  
Shinichi Ogawa ◽  
Nobuyoshi Hosoito
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
High Temperature ◽  
Low Temperature ◽  
Magnetic Measurements ◽  
Perpendicular Anisotropy ◽  
Deposition Technique ◽  
Multilayered Films ◽  
Mossbauer Spectra ◽  
Curie Temperatures

ABSTRACTBy using UHV deposition technique, multilayered films consisting of Fe and rare-earth (Dy, Nd or Y) layers were prepared. Magnetic properties of Fe layers were investigated from 57Fe Mössbauer spectroscopy. From SQUID magnetic measurements, the behavior of rare-earth layers was studied. In Fe/Dy and Fe/Nd multilayers, there often exists a large perpendicular anisotropy. Mössbauer spectra evidenced that, in certain samples, the magnetization changes the direction, from in-plane at high temperature to perpendicular at low temperature. The origin of the perpendicular anisotropy is attributed to interface rare-earth atoms which are magnetically coupled with ferromagnetic Fe layers even at higher than their bulk Curie temperatures.

scholarly journals High-yield fabrication of perpendicularly magnetised synthetic antiferromagnetic nanodiscs

Nano Research ◽  
2021 ◽  
Author(s):  
Emma N. Welbourne ◽  
Tarun Vemulkar ◽  
Russell P. Cowburn
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Sacrificial Layer ◽  
Nanosphere Lithography ◽  
High Yield ◽  
Perpendicular Anisotropy ◽  
Ion Milling ◽  
Lift Off

AbstractSynthetic antiferromagnetic (SAF) particles with perpendicular anisotropy display a number of desirable characteristics for applications in biological and other fluid environments. We present an efficient and effective method for the patterning of ultrathin Ruderman-Kittel-Kasuya-Yoshida coupled, perpendicularly magnetised SAFs using a combination of nanosphere lithography and ion milling. A Ge sacrificial layer is utilised, which provides a clean and simple lift-off process, as well as maintaining the key magnetic properties that are beneficial to target applications. We demonstrate that the method is capable of producing a particularly high yield of well-defined, thin film based nanoparticles.

scholarly journals STRUCTURAL AND MAGNETIC PROPERTIES OF [Pd/Co-Nb/Pd/Si] MULTILAYERED FILMS

1996 ◽  
Vol 45 (3) ◽  
pp. 533
Author(s):  
YAN SHI-SHEN ◽  
LIU YI-HUA ◽  
CHEN JING-GENG ◽  
MEI LIANG-MO ◽  
HUANG JIE
Keyword(s):  
Magnetic Properties ◽  
Multilayered Films ◽  
Structural And Magnetic Properties
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