Determination of stress-coefficient of magnetoelastic anisotropy in flexible amorphous CoFeB film by anisotropic magnetoresistance

Wen, Xingcheng; Wang, Baomin; Sheng, Ping; Zhou, Tianjun; Yang, Huali; Pei, Ke; Zhan, Qingfeng; Xia, Weixing; Xu, Hui; Li, Run-Wei

doi:10.1063/1.4999493

Cited by 20 publications

(25 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this letter, we construct a new function basis to expand ME by considering the following facts: (1) the new function basis should be complete and orthogonal; (2) the higher-order terms of ME should tend to be zero and be negligible; (3) material parameters should be included in the new function basis to describe different magnetoelasticity for various materials; (4) the increasing rate of ME is related to deformation [ 19 , 20 ]; and (5) ME increases more slowly with the increasing deformation [ 19 , 20 ].…”

Section: Model Constructionmentioning

confidence: 99%

See 1 more Smart Citation

A Nonlinear Magnetoelastic Energy Model and Its Application in Domain Wall Velocity Prediction

Fan²,

Sun

et al. 2022

Sensors

View full text Add to dashboard Cite

In this letter, we propose a nonlinear Magnetoelastic Energy (ME) with a material parameter related to electron interactions. An attenuating term is contained in the formula of the proposed nonlinear ME, which can predict the variation in the anisotropic magneto-crystalline constants induced by external stress more accurately than the classical linear ME. The domain wall velocity under stress and magnetic field can be predicted accurately based on the nonlinear ME. The proposed nonlinear ME model is concise and easy to use. It is important in sensor analysis and production, magneto-acoustic coupling motivation, magnetoelastic excitation, etc.

show abstract

Section: Model Constructionmentioning

confidence: 99%

“…The variations in the magneto-crystalline anisotropy constant of CoFeB induced by ME with the stress applied along the x and y directions are given in Figure 2 [ 19 ]. The measurement was taken in a uniaxial in-plane anisotropy of the CoFeB/PVDF system.…”

Section: Model Verificationmentioning

confidence: 99%

A Nonlinear Magnetoelastic Energy Model and Its Application in Domain Wall Velocity Prediction

Fan²,

Sun

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…1 y M W y   (15) in the same way as the analysis of continuous film, and the strain of strip film can be obtained:…”

Section: Strain Of Strip Metallic Filmsmentioning

confidence: 99%

“…However, the elasticity of functional layers and polymer substrates is significantly different: for materials with a certain tensile capacity, such as carbon nanotubes and Ag nanowire, the functional layer can be stretched [11,12] and bent [13] to a certain extent. However, for many functional materials, such as metallic thin films, are almost non-stretchable [14][15][16], and will crack under a very small tensile strain, thus making the device unusable.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Analysis and Experimental Studies of the Transverse Strain in Wrinkled Metallic Thin Films

Nie

Wang

Liu

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

The wrinkling structures, which can greatly improve the stretchability of the metallic thin films, have been widely used in the preparation of stretchable devices. However, the artificial wrinkling structures are often accompanied by the generation of microcracks, which seriously affect the performance of the devices. In this work, by establishing the corresponding model, the transverse strain of the longitudinally prestrained continuous film and the strip film is mechanically analyzed, which is verified by experimental results; for the strain of blank substrate, the error of the model was about 3.7%. It is difficult to avoid the generation of microcracks with continuous films, but strip films can avoid the generation of microcracks to a certain extent. The experimental results illustrate the various factors affecting the generation of microcracks. The transverse strain of the film is proportional to the substrate’s Young’s modulus, Poisson’s ratio, thickness, and prestrain and is basically inversely proportional to the strip film’s Young’s modulus, thickness, and strip interval. Our results provide deeper knowledge for choosing proper metallic materials to fabricate stretchable wrinkled devices.

show abstract

“…For example, Melzer et al., reported a flexible Hall sensor with sensibility of −2.3 V (AT) −1 by integrating bismuth films on flexible polyimide foils, which is lower than that of rigid silicon‐based Hall sensor. [ 21 ] In comparison, magnetoresistance materials with large magnetoresistance change have been sputtered [ 24–28 ] or integrated [ 29–31 ] upon soft polymeric substrates, exhibiting promising application in contact‐less motion recognition, [ 32 ] as well as strain direction sensing. [ 33 ] Despite tremendous efforts paid in this field, two challenges exist that impede the advance of flexible magnetoresistance devices.…”

Section: Introductionmentioning

confidence: 99%

Magnetic‐Sensitive Crack Sensor with Ultrahigh Sensitivity at Room Temperature by Depositing Graphene Nanosheets upon a Flexible Magnetic Film

Huang

et al. 2021

Adv Elect Materials

View full text Add to dashboard Cite

Flexible magnetic field sensors attract significant interests in magnetic detection and flexible electronics. However, two challenges, low sensitivity, and limited working range, impede their practical application. Herein, a new type of magnetic‐sensitive crack sensor (M‐CS) by depositing graphene nanosheets upon a flexible magnetic film through a facial infrared drying technique is reported. The M‐CS exhibits an ultrahigh sensitivity (relative resistance change up to 4.0 × 1010) toward a moderate magnetic field of 43 mT at room temperature. In addition, the M‐CS shows a long cycling stability over 10 000 cycles. Such a superior sensitivity is attributed to physically cutting/recovering the pathways of electron transport through nanosheets’ separation/contact. Diverse experimental parameters, such as the concentration of graphene solution and the thickness of bottom magnetic substrates, have been tailored to improve the magnetic sensitivity of M‐CS. Furthermore, the array of M‐CSs with different relative resistance change can be used as the cipher key to recognize aimed magnetic signal without contact. It is believed that the M‐CS with an ultrahigh magnetic sensitivity at operational condition and long‐term stability could benefit the development of magneto‐sensitive sensors, and exploit the application of 2D materials in flexible electronic devices.

show abstract

Determination of stress-coefficient of magnetoelastic anisotropy in flexible amorphous CoFeB film by anisotropic magnetoresistance

Cited by 20 publications

References 26 publications

A Nonlinear Magnetoelastic Energy Model and Its Application in Domain Wall Velocity Prediction

A Nonlinear Magnetoelastic Energy Model and Its Application in Domain Wall Velocity Prediction

Mechanical Analysis and Experimental Studies of the Transverse Strain in Wrinkled Metallic Thin Films

Magnetic‐Sensitive Crack Sensor with Ultrahigh Sensitivity at Room Temperature by Depositing Graphene Nanosheets upon a Flexible Magnetic Film

Contact Info

Product

Resources

About