3807. Magnetic properties of bias-sputtered Gd-Co-Fe amorphous films with uniaxial perpendicular anisotropy. (USA)

Vacuum ◽  
1979 ◽  
Vol 29 (1) ◽  
pp. 37
Keyword(s):  
Magnetic Properties ◽  
Perpendicular Anisotropy ◽  
Amorphous Films

Effect of a Cr Underlayer on the Magnetic Properties of TbCo Amorphous Films with Perpendicular Anisotropy

2002 ◽  
Vol 19 (10) ◽  
pp. 1531-1533 ◽  
Author(s):  
Huang Zhi-Xin ◽  
Li Zuo-Yi (Z.Y Lee) ◽  
Jin Fang ◽  
Cheng Xiao-Min ◽  
Xu Xiao-Hong ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Perpendicular Anisotropy ◽  
Amorphous Films

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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.

Substrate-Deposition-Teiimperatijre Dependence of Perpendicular Magnetic Anisotropy in (Fe/Pt) Compositionally-Modulated Films

1991 ◽  
Vol 232 ◽  
Author(s):  
S. Iwata ◽  
S. S. P. Parkin ◽  
H. Nuri ◽  
T. Suzuki
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Saturation Magnetization ◽  
Systematic Study ◽  
Deposition Temperature ◽  
Major Part ◽  
Perpendicular Magnetic Anisotropy ◽  
Perpendicular Anisotropy ◽  
Elastic Effect

ABSTRACTA systematic study on magnetic properties of (Fc/Pt) compositionally-modulated films as a function of substrate-deposition-temperature has been carried out. For films with (2.5ÅFe/18ÅPt)×40, the intrinsic perpendicular magnetic anisotropy Ku is found to increase with decreasing temperature for all the sarmples deposited at temperatures from -114 °C to 220°C during deposition. The higher the substrate-deposition-temperature, the larger the Ku values become. This result implies a possible contribution from the magne to-elastic effect to the total anisotropy. However, a major part responsible for the perpendicular anisotropy may be found in other mechanisms. The saturation magnetization is found to exceed the value for pure Fe at temperatures lower than 180K.

Microstructure and Magneto-Optical Properties of TbFeCo Films Prepared by Facing Targets Sputtering

1988 ◽  
Vol 132 ◽  
Author(s):  
H. Ito ◽  
T. Hirata ◽  
M. Naoe
Keyword(s):  
Magnetic Properties ◽  
Optical Properties ◽  
Rotation Angle ◽  
Perpendicular Magnetic Anisotropy ◽  
Columnar Structure ◽  
Torque Measurement ◽  
Amorphous Films ◽  
Kerr Rotation ◽  
Wide Range ◽  
Kerr Rotation Angle

ABSTRACTThe microstructure of TbFeCo amorphous films deposited by a facing targets type of sputtering (FTS) method varied with the change of deposition rate Rd. The films deposited at Rd of about 100–200 nm/min did not present any distinguishable columnar structure while the ones at Rd of about 50 nm/min revealed obvious columnar structure. The films with columnless structure exhibited Kerr rotation angle θk of 0.37 deg. of which the value was higher than that of the films with columnar structure over the wide range of Th content. The torque measurement implied that the presence of columnar structure was not mainly necessary for the occurrence of large perpendicular magnetic anisotropy. Under satisfactory confinement of plasma during sputtering, the dense, uniform and columnless TbFeCo films can be obtained on plasma-free substrate even at Rd as high as 200 nm/min, without destroying the excellent magnetic properties and magneto-optical characteristics.

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