Stress-induced remagnetization in magnetostrictive films

McCord, Jeffrey; Schäfer, Rudolf; Frommberger, M.; Glasmachers, Stefan; Quandt, Eckhard

doi:10.1063/1.1667793

Cited by 23 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[16][17][18][19] In all of the three types of MR sensors, well-defined magnetic easy and hard axes have to be established through magnetic anisotropy engineering www.advelectronicmat.de Here, we introduced magnetoelectric coupling to control the switching of magnetic easy and hard axes and thus realized dynamic control of the magnetometer sensitive direction. Anisotropic magnetoresistive sensors have been prepared on piezoelectric substrates where an E-field controlled uniaxial strain can trigger a 90° rotation of the magnetic easy and hard axes, [43] and thus the testing direction of the magnetometers could be reconfigured by the electric field.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Magnetoresistive Sensor Based on Magnetoelectric Coupling

Chen

Zhao

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

Measurement of magnetic signal from an arbitrary direction is of vital importance for applications in magnetic navigation, space science, indoor positioning, and magnetic gesture recognition. However, magnetoresistive sensors, as vector magnetometers, are only suitable for detection of magnetic signals along the magnetic hard axis. Magnetoelectric coupling is introduced to control the magnetic anisotropy of a magnetoresistive pattern, realizing a 90° rotation of the magnetic hard axis and thus the sensing direction of the tunable sensor. The sensitivity along the initial magnetic easy axis can be enhanced 12.7‐fold while that along the initial hard axis can be depressed to be only 4.7% of the original value through magnetic anisotropy engineering. The tailorable directional sensitivity of the electric‐field reconfigurable sensor speaks to the strong potential of this system for practical applications requiring testing of localized magnetic fields, for example, magnetic diagnosis or biomagnetic characterization.

show abstract

Section: Introductionmentioning

confidence: 99%

Reconfigurable Magnetoresistive Sensor Based on Magnetoelectric Coupling

Chen

Zhao

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…Inversely, some material can be optimized by stressing [12][13][14][15] . The method of stressing film is, in general, to deposit a film on a bent substrate and then set it free [12][13][14] , or bend (or elongate) the film-substrate system after the deposition of film on a free substrate [15] . Therefore, the analysis of the film stress and strain in magnetic multilayers or magnetic film-substrate composites is one of the basic contents of the study on physical property.…”

Section: Introductionmentioning

confidence: 99%

Analysis of film strain and stress in a film-substrate cantilever system

Narsu

Yun

2008

Sci. China Ser. G-Phys. Mech. Astron.

View full text Add to dashboard Cite

The bending problem of a magnetic film-nonmagnetic substrate cantilever system is studied by using the principle of energy minimization. Emphasis is placed on the analysis of geometrical and physical parameter dependence of the neutral plane, internal film stress and strain of the cantilever system, and then the influence of such a parameter on the bending characteristic is presented. The results indicate, owing to the anisotropic expanding feature of the magnetostriction, that the neutral plane is generally anisotropic, and moves downwards rapidly with the increasing thickness ratio. Meanwhile, the bounding rigidity of substrate on the film will decrease with the increasing thickness ratio, and thus release the film stress, i.e., it decreases, but the film strain increases. The effect of Poisson's ratio of the materials on the film strain, the stress and the neutral plane in the direction transverse to the magnetization is prominent. For the strain and the stress in the magnetization, however, the role of Poisson's ratio is inconspicuous. This property is due to the initiative elongating (or contracting) feature of the magnetic film along its magnetization. magnetic film-substrate system, strain, stress, neutral plane

show abstract

“…On the other hand, the observation of the magnetic domain structure is probably one of the most direct ways to probe the information about the magnetization and anisotropy distributions [5][6][7][8][9]. The commonly used domain observation techniques [10] include bitter patterns, magneto-optical methods, Lorentz electron microscopy and magnetic force microscopy (MFM), etc.…”

Section: Introductionmentioning

confidence: 99%