Piezoelectric-magnetic behavior of ferroelectrets coated with magnetic layer

2021 ◽  
Vol 119 (24) ◽  
pp. 241901
Author(s):  
R. A. P. Altafim ◽  
Y. A. O. Assagra ◽  
R. A. C. Altafim ◽  
J. P. Carmo ◽  
T. T. C. Palitó ◽  
...  
Keyword(s):  
Magnetic Layer ◽  
Magnetic Behavior

Adjacent Layer Composition Effects on Fetbco Thin Film Magnetic Properties

1995 ◽  
Vol 384 ◽  
Author(s):  
Michael B. Hintz
Keyword(s):  
Magnetic Properties ◽  
Ion Beam ◽  
Magnetic Layer ◽  
Magnetic Behavior ◽  
Relative Magnitude ◽  
Adjacent Layer ◽  
Energy Product ◽  
Magnetic Layers ◽  
20 Nm ◽  
Layer Composition

ABSTRACTThe magneto-optical (MO) layer in current rare earth-transition metal (RE-TM) based MO recording media is typically 20 nm to 60 nm thick. It has been suggested, however, that media structures employing a multiplicity of thinner MO layers may be advantageous, e.g., for multilevel recording applications [1] or media noise reduction [2]. As magnetic layer thickness is reduced, interactions among magnetic layers and adjacent materials can have an increasingly large influence on magnetic properties; in many instances, these interactions can dominate the observed magnetic behavior.As a means of studying MO layer - adjacent layer interactions, we have used thin (≈3 nm) films of several materials to separate single 24 nm thick ion-beam-deposited FeTbCo layers into N thinner layers of 24/N nm thickness (N × 24/N). As N increases, the FeThCo magnetic properties generally change; however, the relative magnitude of the changes is strongly dependent upon the adjacent layer composition. Magnetization (Ms), energy product (MsHc) at 30 C and Curie temperature data for 1 × 24 nm structures and 6 × 4 nm structures are compared and discussed for specimens employing SiCx, Six, YOx, HfOx, Si and SiOx adjacent layer materials.

Magnetic and Magnetoresistance Properties of (Co/Ge)n Films

2015 ◽  
Vol 233-234 ◽  
pp. 423-426
Author(s):  
Gennady Patrin ◽  
Igor Turpanov ◽  
Ekaterina Maruschenko ◽  
Konstantin Patrin ◽  
Alexander Kobyakov ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Magnetic Layer ◽  
Magnetic Behavior ◽  
The Other ◽  
Dead Layer ◽  
Cubic Phase ◽  
Face Centered Cubic ◽  
Ferromagnetic Order ◽  
Face Centered ◽  
Magnetic And Electrical Properties

The magnetic and electrical properties of (Co/Ge)nfilms are experimentally studied. It is established that at the Co/Ge interfacean intermediate magnetic layer forms. Twophases of cobalt, one is a face-centered cubic phase and the other ispresumably a Co–Ge alloy with a weakly ferromagnetic order, have been found toexist. A “dead” layer no more than 2 nm in thickness is formed at the interface.This layer affects the magnetic behavior andmagnetoresistive effect in the investigated structures.

Magnetic and Electrical Properties of Co/Ge Bilayer Films

2014 ◽  
Vol 215 ◽  
pp. 348-351
Author(s):  
Gennady S. Patrin ◽  
Igor A. Turpanov ◽  
Konstantin G. Patrin ◽  
Ekaterina A. Alekseichik ◽  
Aleksandr V. Kobyakov ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Magnetic Layer ◽  
Magnetic Behavior ◽  
Bilayer Films ◽  
Magnetoresistive Effect ◽  
Magnetic And Electrical Properties

The magnetic and electrical properties of Co/Ge bilayer films are experimentally studied. It is established that at the Co/Ge interface an intermediate magnetic layer forms. This layer affects the magnetic behavior and magnetoresistive effect in the investigated structures.

Lorentz electron microscopy of magnetic domains in rapidly solidified and annealed Pt-Co-B alloys

1991 ◽  
Vol 49 ◽  
pp. 784-785
Author(s):  
N. Qiu ◽  
J. E. Wittig
Keyword(s):  
Rapid Solidification ◽  
Ion Beam ◽  
Magnetic Behavior ◽  
High Coercivity ◽  
Magnetic Domains ◽  
Beam Angle ◽  
Tem Analysis ◽  
Intrinsic Coercivity ◽  
Hard Magnets ◽  
Rapidly Solidified

PtCo hard magnets have specialized applications owing to their relatively high coercivity combined with corrosion resistance and ductility. Increased intrinsic coercivity has been recently obtained by rapid solidification processing of PtCo alloys containing boron. After rapid solidification by double anvil splat quenching and subsequent annealing for 30 minutes at 650°C, an alloy with composition Pt42Co45B13 (at.%) exhibited intrinsic coercivity up to 14kOe. This represents a significant improvement compared to the average coercivities in conventional binary PtCo alloys of 5 to 8 kOe.Rapidly solidified specimens of Pt42Co45B13 (at.%) were annealed at 650°C and 800°C for 30 minutes. The magnetic behavior was characterized by measuring the coercive force (Hc). Samples for TEM analysis were mechanically thinned to 100 μm, dimpled to about 30 nm, and ion milled to electron transparency in a Gatan Duomill at 5 kV and 1 mA gun current. The incident ion beam angle was set at 15° and the samples were liquid nitrogen cooled during milling. These samples were analyzed with a Philips CM20T TEM/STEM operated at 200 kV.

STRANGE MAGNETIC BEHAVIOR IN THE LITHIUM-METHYLAMINE SYSTEM

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-45-C8-48
Author(s):  
A. Stacy ◽  
D. C. Johnson ◽  
M. J. Sienko
Keyword(s):  
Magnetic Behavior

Magnetic Properties of xCeO2•(50 − x) PbO•50B2O3 Glasses and Glass Ceramics

2017 ◽  
Vol 13 (1) ◽  
pp. 4486-4494 ◽  
Author(s):  
G.El Damrawi ◽  
F. Gharghar
Keyword(s):  
Magnetic Properties ◽  
Large Scale ◽  
Glass Ceramics ◽  
Magnetic Behavior ◽  
Crystal Formation ◽  
Dual Roles ◽  
Effective Agent ◽  
Ordered Structures ◽  
Essential Change

Cerium oxide in borate glasses of composition xCeO2·(50 − x)PbO·50B2O3 plays an important role in changing both microstructure and magnetic behaviors of the system. The structural role of CeO2 as an effective agent for cluster and crystal formation in borate network is clearly evidenced by XRD technique. Both structure and size of well-formed cerium separated clusters have an effective influence on the structural properties. The cluster aggregations are documented to be found in different range ordered structures, intermediate and long range orders are the most structures in which cerium phases are involved. The nano-sized crystallized cerium species in lead borate phase are evidenced to have magnetic behavior.  The criteria of building new specific borate phase enriched with cerium as ferrimagnetism has been found to keep the magnetization in large scale even at extremely high temperature. Treating the glass thermally or exposing it to an effective dose of ionized radiation is evidenced to have an essential change in magnetic properties. Thermal heat treatment for some of investigated materials is observed to play dual roles in the glass matrix. It can not only enhance alignment processes of the magnetic moment but also increases the capacity of the crystallite species in the magnetic phases. On the other hand, reverse processes are remarked under the effect of irradiation. The magnetization was found to be lowered, since several types of the trap centers which are regarded as defective states can be produced by effect of ionized radiation. 

Effects of Lanthanum on Magnetic Behavior and Hardness of Electroless Ni–Fe–P Deposits

2009 ◽  
Vol 100 (5) ◽  
pp. 667-671 ◽  
Author(s):  
Wei-Qing Huang ◽  
Gui-Fang Huang ◽  
Xing Wang ◽  
Chun-Lin Xie ◽  
Bing Liang
Keyword(s):  
Magnetic Behavior ◽  
Electroless Ni
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