scholarly journals Direct Magnetoelectric Effect in a Sandwich Structure of PZT and Magnetostrictive Amorphous Microwires

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 916 ◽  
Author(s):  
Abdulkarim Amirov ◽  
Irina Baraban ◽  
Larissa Panina ◽  
Valeria Rodionova
Keyword(s):  
Magnetic Field ◽  
Small Volume ◽  
Magnetoelectric Effect ◽  
Thermoelastic Stress ◽  
Stress Release ◽  
Soft Magnetic ◽  
Multilayered Films ◽  
Soft Magnetic Alloys ◽  
Amorphous Microwires ◽  
Electromechanical Resonance

The magnetoelectric (ME) response in a trilayer structure consisting of magnetostrictive Fe77.5B15Si17.5 amorphous microwires between two piezoelectric PZT (PbZr0.53Ti0.47O3) layers was investigated. Soft magnetic properties of wires make it possible to operate under weak bias magnetic fields below 400 A/m. Enhanced ME voltage coefficients were found when the microwires were excited by ac magnetic field of a frequency of 50–60 kHz, which corresponded to the frequency of electromechanical resonance. The as-prepared microwires were in a glass coat creating a large thermoelastic stress and forming a uniaxial magnetic anisotropy. The effect of glass-coat removal and wire annealing on ME coupling was investigated. The glass coat not only affects the wire magnetic structure but also prevents the interfacial bonding between the electric and magnetic subsystems. However, after its removal, the ME coefficient increased slightly less than 10%. Refining the micromagnetic structure and increasing the magnetostriction by stress release during wire annealing (before or after glass removal) strongly increases the ME response up to 100 mV/(cm × Oe) and reduces the characteristic DC magnetic field down to 240 A/m. Although the achieved ME coefficient is smaller than reported values for multilayered films with layers of PZT and soft magnetic alloys as Metglass, the proposed system is promising considering a small volume proportion of microwires.

scholarly journals GMI Effect of Ultra-Soft Magnetic Soft Amorphous Microwires

2012 ◽  
Vol 6 (1) ◽  
pp. 39-43 ◽  
Author(s):  
A. Zhukov ◽  
M. Ipatov ◽  
J. M. Blanco ◽  
V. Zhukova
Keyword(s):  
Magnetic Field ◽  
Magnetic Behavior ◽  
Bias Current ◽  
Soft Magnetic ◽  
Magnetoelastic Anisotropy ◽  
Gmi Effect ◽  
Low Field ◽  
Amorphous Microwires

In this paper we experimentally studied GMI effect and soft magnetic behavior of Co-rich microwires. Correlation between magnetoelastic anisotropy and magnetic field dependences of diagonal and off-diagonal impedance components are observed. Low field GMI hysteresis, explained in terms of magnetoelastic anisotropy of microwires, has been suppressed by the bias current.

Magnetic Properties and Temperature Stability of Nanocrystalline Fe-Based Soft Magnetic Alloys

2010 ◽  
Vol 168-169 ◽  
pp. 384-387
Author(s):  
N.I. Noskova ◽  
V.V. Shulika ◽  
A.P. Potapov
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Temperature Stability ◽  
Magnetic Characteristics ◽  
Time Stability ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Ac Magnetic Field ◽  
Soft Magnetic Alloys ◽  
Temperature Time

The effect of the nanocrystallization conditions on the structure, magnetic characteristics and temperature stability of the Fe73.5Cu1Nb3Si13.5B9, Fe73.5Cu1Nb1.5Мo1.5Si13.5B9, Fe69Cu1Nb1.5Мo1.5Si13.5B9Co4.5, and (Fe0.6Co0.4)86Hf7B6Cu1 nanocrystalline soft magnetic alloys has been analyzed. The samples were nanocrystallized in the absence of a field, in a dc or ac magnetic field. It has been shown that the Fe73.5Cu1Nb1.5Мo1.5Si13.5B9 alloy has unique magnetic properties and a high temperature-time stability. It has been found that nanocrystallization of the (Fe0.6Co0.4)86Hf7B6Cu1 amorphous alloy in an ac magnetic field considerably improves its static and dynamic magnetic properties.

GIANT MAGNETOIMPEDANCE BEHAVIOR IN MAGNETIC FIELD-DEPOSITED AMORPHOUS FeCuCrVSiB SINGLE AND MULTILAYERED FILMS

2010 ◽  
Vol 24 (29) ◽  
pp. 5711-5721
Author(s):  
WEI-PING CHEN ◽  
SHU-QIN XIAO ◽  
SHANG-SHEN FENG ◽  
YI-HUA LIU
Keyword(s):  
Magnetic Field ◽  
Rf Sputtering ◽  
Single Layer ◽  
Deposition Process ◽  
Film Plane ◽  
Soft Magnetic ◽  
Multilayered Films ◽  
Low Frequencies ◽  
Transverse Fields ◽  
The Magnetic Field

The magnetic and magnetoimpedance behavior of FeCuCrVSiB and ( F / SiO 2)3/ Ag /( SiO 2/ F )3( F = FeCuCrVSiB ) soft magnetic amorphous films deposited in a magnetic field have been investigated systematically. The samples were deposited by the RF sputtering with or without a static magnetic field of 900 Oe applied in the film plane. It is found that the magnetic field applied during the deposition process improves the soft magnetic properties of the sample significantly. The coercive force of the sample is about 0.8 Oe, which is much smaller than that deposited without a field. Moreover, remarkable GMI effects were obtained at relatively low frequencies, which contrasts with the samples deposited without field. In the magnetic field-deposited state, the maximum GMI ratios of 21.5% and 19.5% were achieved for the single-layer films in longitudinal and transverse fields at a frequency of 13 MHz, while for the multilayered films, the maximum values of longitudinal and transverse GMI ratios are 45% and 44% at a frequency of 6.81 MHz, respectively. These superior GMI behaviors of the as-deposited films are related to the magnetic field used in the preparation process and the inserted SiO 2 layers.

Tuning of Soft Magnetic Properties in FeCo- and FeNi-Based Amorphous and Nanocrystalline Alloys by Thermal Processing in External Magnetic Field

2014 ◽  
Vol 783-786 ◽  
pp. 1937-1942 ◽  
Author(s):  
Ivan Škorvánek ◽  
Jozef Marcin ◽  
Jozef Kováč ◽  
Peter Švec ◽  
Nicoleta Lupu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Thermal Processing ◽  
Uniaxial Anisotropy ◽  
Hysteresis Loops ◽  
Transverse Magnetic ◽  
Nanocrystalline Alloys ◽  
Soft Magnetic ◽  
Beneficial Effects ◽  
Soft Magnetic Alloys

Thermal processing of materials in external magnetic field is employed in order to produce a controllable uniaxial anisotropy and to tailor a domain structure in the series of soft magnetic FeCo-and FeNi-based amorphous/nanocrystalline alloys. Examples of our recent work on the utilization of both longitudinal and transverse magnetic field annealing for tuning the shape of hysteresis loops as well as the giant magnetoimpedance (GMI) characteristics are briefly presented. The beneficial effects of a heat treatment under magnetic field are discussed in terms of the improved application-oriented properties of these soft magnetic alloys.

MAGNIFER 8105, 8105 So

Alloy Digest ◽  
2001 ◽  
Vol 50 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Content ◽  
Heat Treating ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Soft Magnetic Alloys ◽  
Recording Heads ◽  
High Nickel

Abstract Magnifer 8105 and 8105 So are soft magnetic alloys with a high nickel content. Typical applications for 8105 are recording heads, while 8105 So has additional applications. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-575. Producer or source: Krupp VDM GmbH.

Sign in / Sign up

Export Citation Format

Share Document