Giant magnetoimpedance in thin amorphous wires: From manipulation of magnetic field dependence to industrial applications

Zhukov, А.; Ipatov, M.; Churyukanova, M.; Kaloshkin, S.D.

doi:10.1016/j.jallcom.2012.10.082

Cited by 83 publications

(73 citation statements)

References 22 publications

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“…Long cylindrical ferromagnetic wires with excellent soft magnetic properties [1,2] have been of interest for numerous applications, mainly in sensing devices such as electrical current and magnetic field sensors aimed for medical and automotive uses [3][4][5]. To obtain a low coercivity, H C , accompanied by a high relative magnetic permeability, µ r , such materials have been produced mainly in amorphous state, in order to avoid any magnetocrystalline anisotropy.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Nanocrystalline Magnetic Wires

et al. 2017

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Abstract:The magnetic characteristics of FINEMET type glass-coated nanowires and submicron wires are investigated by taking into account the structural evolution induced by specific annealing all the way from a fully amorphous state to a nanocrystalline structure. The differences between the magnetic properties of these ultrathin wires and those of the thicker glass-coated microwires and "conventional" wires with similar structures have been emphasized and explained phenomenologically. The domain wall propagation in these novel nanowires and submicron wires, featuring a combination between an amorphous and a crystalline structure, has also been studied, given the recent interest in the preparation and investigation of new materials suitable for the development of domain wall logic applications.

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Section: Introductionmentioning

confidence: 99%

Ultrathin Nanocrystalline Magnetic Wires

et al. 2017

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“…Similarly to recently observed changes induced by annealing we can assume that the stress relaxation induced by annealing can change the sign of the magnetostriction constant. Indeed the reported internal stresses values inside the metallic nucleus are between 200 MPa and 5 GPa [10][11][12]. Experimentally measured values of the B-coefficient from Eq.…”

Section: Resultsmentioning

confidence: 98%

“…Consequently both thermal stresses induced by the solidification of the metallic nucleus from the surface layer as well as the internal stresses associated to the difference in the thermal expansion coefficients between the glass coating and the ferromagnetic nucleus affect the magnetoelastic anisotropy [10][11][12]. The strength of the internal stresses induced by the difference of thermal expansion coefficients depends on the ρ-ratio between the metallic nucleus diameter, d, and total microwire diameter, [10][11][12] increasing with decreasing the ρ-ratio, i.e. with increasing of the relative volume of the glass coating.…”

Section: Introductionmentioning

confidence: 99%

Tailoring of Magnetic Properties and Magnetoimpedance Effect in Thin Amorphous Wires

Zhukov¹,

Talaat

Ipatov³

et al. 2016

Acta Phys. Pol. A

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We have studied the effect of annealing conditions on magnetic properties of amorphous CoFeNi-based glasscoated microwires. We show that annealing can be very effective for manipulation the magnetic properties of amorphous ferromagnetic glass-coated microwires. Low coercivity and high giant magnetoimpedance (GMI) effect have been observed in as-prepared Co-rich microwires. After annealing of Co-rich microwires we can observe transformation of inclined hysteresis loops into rectangular and coexistence of fast magnetization switching and GMI effect in the same sample. We demonstrate that the switching field value of microwires can be tailored by annealing in the range from 4 to 200 A/m.

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“…[3][4][5][6][7] Nanocrystalline Fe-based alloys are quite attractive from the point of view of applications, in which more expensive Co-based amorphous alloys are used conventionally. [8][9][10][11][12][13][14][15] Basically, the main advantage of nanocrystalline Fe-based alloys is higher saturation magnetization.…”

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confidence: 99%

“…For GMI measurements, we used specially designed micro-strip sample holder, described elsewhere. 5 For structural studies, we used a BRUKER (D8 Advance) X-ray diffractometer with Cu K a (k ¼ 1.54 Å ) radiation.…”

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confidence: 99%