Prospects of the application of modern soft-magnetic materials in magnetometric geophysical equipment

Astrakhantsev, Yu. G.; Lavrent’ev, A. G.; Shcherbinin, V. E.; Корзунин, Г. С.; Nekhoroshkov, V. L.; Потапов, А. П.; Sherendo, T.A.

doi:10.1134/s1028334x06010120

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The application of modern magnetically soft materials and new methods for their treatment is an indis pensable condition for manufacturing sensing devices, e.g., flux gate magnetometers and other magneto metric devices used in such high tech fields as borehole magnetometry [1]. The magnetic properties of magnetically soft materials depend on their structural state, specific features of the domain structure, and the degree of domain boundary stabilization.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of the structural state of bulk nano- and submicrocrystalline magnetically soft materials

Носкова

Lavrentyev

2012

Russ J Nondestruct Test

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Different structural states, namely microcrystalline, submicrocrystalline, nanocrystalline (each with a different set of grain sizes) and amorphous ones, in magnetically soft materials intended for fabricating sensitive elements in high tech equipment are considered. The effects of the structural state of Fe 5 Co 70 Si 15 B 10 , Fe 60 Co 20 Si 5 B 15 , Co 81.5 Mo 9.5 Zr 9 , and Fe 73.5 -x Co x Cu 1 Nb 3 Si 13.5 B 9 (x = 0, 10, 20, 30 at.%) amorphous alloys on their magnetic characteristics in different nanocrystallization con ditions are analyzed. The correlation of the peculiarities of the fine structure and the grain sizes in the alloys under study with their magnetic parameters and informative parameters of the Barkhausen effect is shown.

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Section: Introductionmentioning

confidence: 99%

Diagnosis of the structural state of bulk nano- and submicrocrystalline magnetically soft materials

Носкова

Lavrentyev

2012

Russ J Nondestruct Test

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“…Soft magnetic alloys are being widely used in some domains such as aviation, spaceflight, electron, and communication and so on [1]. So far, more attention has focused on the relationship between the microstructure and soft magnetic properties of alloys [2,3].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Magnetic Properties of Undercooled Fe-50at%Ni Alloys

Xie

Bai

Jia

et al. 2011

MSF

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Bulk Fe-50at%Ni alloy melts were undercooled using cyclic superheating and glass slag purification. As a result, a maximum undercooling up to 217 K could be achieved. As-solidified microstructures were observed by means of optical microscope. Phase identification of Fe-50at%Ni alloys was performed using the Shimadzu X-ray diffractometer (XRD) system. The chemical constitution revealed using a JEOL Model JSM-6700F scanning electron microscope equipped with energy dispersive X-ray spectroscopy (EDX). The magnetic properties of the alloys were measured by vibrating sample magnetometer (VSM) with a DC M-H analyzer. The results indicated that there were twice grain refinements occurred within an undercooling range of 55-217K, where the first could be ascribed to dendrite-remelting, and the second to recrystallization. The phase composition of undercooled Fe-50at%Ni alloys comprised two phases, i.e., solid solution phases withbccandfccstructure. At various undercoolings, the saturation magnetizationMsandHcrelated closely to the measured grain sizeD, and they were in proportion toD-1by the regression analysis.

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“…Fe-Ni alloys are widely used as soft magnetic materials in many fields such as aviation, spaceflight, electron, communication and so on [1]. At present, all interest of the researches on soft magnetic alloys focuses mainly on the improvement method of magnetic properties and the relationship between the structure and magnetic performances [2].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Magnetic Properties of Undercooled Fe-80at%Ni Alloys

Xie

Bai

Jia

et al. 2009

MSF

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Bulk Fe-80at%Ni melts were undercooled by using cyclic superheating and glass slag purification technique, and the maximum undercooling 340 K could be achieved. The microstructures of Fe-80at%Ni alloys were observed by means of optical microscope (OM). The phase composition was identified by X-ray diffraction (XRD) analysis. The magnetic properties of Fe-80at%Ni alloys were measured by vibrating sample magnetometer (VSM) with a DC M-H analyzer. The results showed that there was only single γ-(Fe, Ni) phase existing in undercooled Fe-80at%Ni alloys. Two grain refinements and one grain coarsening were observed in the undercooling range from 28 K to 340 K. The first grain refinement could be ascribed to dendrite-remelting, and the second to recrystallization induced by the stress originating from rapid solidification. The grain coarsening could be considered as a result of solid-state grain coalescence. The measurement of soft magnetic properties showed that the grain size D decreases with an increase of undercooling, the maximum Ms is 109.98emu/g, corresponding to minimum grain size 42.9μm or undercooling 210 K, and the coercive force Hc is in proportion to the reciprocal of grain size D-1.

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Prospects of the application of modern soft-magnetic materials in magnetometric geophysical equipment

Cited by 4 publications

References 2 publications

Diagnosis of the structural state of bulk nano- and submicrocrystalline magnetically soft materials

Diagnosis of the structural state of bulk nano- and submicrocrystalline magnetically soft materials

Microstructure and Magnetic Properties of Undercooled Fe-50at%Ni Alloys

Microstructure and Magnetic Properties of Undercooled Fe-80at%Ni Alloys

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