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1
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The Magnetoelastic Characteristics of Fe_{70}Ni_8Si_{10}B_{12} Amorphous Alloy Subjected to Thermo-Magnetic Treatment

100%
Bieńkowski A., Salach J., Szewczyk R., Kolano R.
Acta Physica Polonica A
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2008
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vol. 113
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issue 1
87-90
EN
This paper presents the experimental results of the magnetic and magnetoelastic investigation on the properties of Fe_{70}Ni_8Si_{10}B_{12} amorphous alloy, subjected to thermo-magnetic treatment. Samples were annealed at temperature 350°C for 1 hour, in parallel magnetic field (4 kA/m), as well as in transverse field (350 kA/m). Sample annealed without magnetic field was also tested. Magnetoelastic tests were performed under uniform compressive stress, applied to the ring-shaped core, perpendicularly to the direction of magnetizing field. The results indicated that the thermo-magnetic heat treatment changes the magnetic characteristics, but does not have a significant influence on the coarse of magnetoelastic characteristics of Fe_{70}Ni_8Si_{10}B_{12} amorphous alloy.
2
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Temperature Influence on the Functional Properties of Inductive Components with Mn-Zn Ferrite Cores

100%
Jackiewicz D., Kachniarz M., Bieńkowski A.
Acta Physica Polonica A
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2018
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vol. 133
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issue 4
1038-1040
EN
The paper presents the results of investigation of the temperature influence on the inductance and power losses in ferrite cores. Such effect can significantly influence the utility parameters of electronic devices, particularly in precision equipment. For example slight parameter change in this type of components in measuring devices can cause significant changes in output parameters. It is also equally important for mobile devices where increase of losses can limit the duration of service. Special measurement system composed of hysteresis graph, cryostat and PC was utilized to perform the experiment. The cores used during the investigation had closed magnetic circuit. In order to perform measurements of magnetic properties of the material, two sets of windings (magnetizing and sensing) were made on each core. The cores were placed in a cryostat, which was used to set the temperature value within the range from -20 to +50°C. The magnetic properties were measured by the hysteresis graph, to assess the influence of the temperature on the functional parameters.
3
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Newly Developed Systems for the Magnetostrictive Materials Strain Measurements

100%
Kuczyński K., Bieńkowski A., Salbut L., Dymny G.
Acta Physica Polonica A
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2008
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vol. 113
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issue 1
71-74
EN
Magnetostrictive effect is connected with changes of the dimension of soft magnetic materials during the process of theirs magnetization. The paper presents newly developed measuring systems for testing of the strain distribution in the magnetostrictive materials. The system uses simultaneously two measurement techniques: strain-gauge sensor for local strain measurement and grating interferometry for the global determination of strain distribution.
4
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Magnetoelastic Properties of Hitperm-Type Alloys from Torque Moment

100%
Salach J., Bieńkowski A., Szewczyk R.
Acta Physica Polonica A
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2008
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vol. 113
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issue 1
115-118
EN
The following paper presents the results of the investigation on the influence of the torque on the magnetic characteristics of the Hitperm-type Fe_{41.5}Co_{41.5}Cu_1Nb_3B_{13} alloy, in as-quenched and nanocrystalline state. The methodology of application of the torque to the ring-shaped core is also described. This methodology gives a possibility of achieving uniform shearing stresses in the core. The results indicate that shearing stress sensitivity of Hitperm-type alloys depends on the annealing and nanocrystallization process. This effect should be considered during the development of magnetoelastic torque sensors.
5
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Industrial Application of Magnetoelastic Force and Torque Sensors

100%
Bieńkowski A., Szewczyk R., Salach J.
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issue 5
1008-1009
EN
Due to their sensitivity, robustness and the flat shape, the magnetoelastic sensors create new possibilities of industrial applications. This paper presents the results of the field tests of using the magnetoelastic sensors with amorphous alloy ring-shaped cores for ignition detection in locomotive's diesel engines as well as measurements of the torque during the operation of ball valves. Presented results confirm usability of amorphous alloy based, magnetoelastic sensors for specific industrial applications.
6
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Application of Extended Jiles-Atherton Model for Modelling the Influence of Stresses on Magnetic Characteristics of the Construction Steel

100%
Jackiewicz D., Szewczyk R., Salach J., Bieńkowski A.
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vol. 126
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issue 1
392-393
EN
Paper presents the possibility of application of the Jiles-Atherton extended model to describe the magnetic characteristics of construction steel C45 under the influence of tensile stresses. Experiment was performed on the frame-shaped samples. Then, the influence of stresses on hysteresis loops was modelled with the Jiles-Atherton extended model. The obtained results of the modelling are consistent with results of the experimental measurements. The results of modelling create new possibilities of explanation of the physical phenomena connected with magnetisation of the magnetic materials under stresses, which is esential for the assessment of the state of the construction steel during its exploitation in industrial conditions.
7
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Investigation of Magnetoelastic Properties of Ni_{0.36}Zn_{0.64}Fe₂O₄ Ferrite Material under Low Magnetizing Fields Corresponding to Rayleigh Region

100%
Kachniarz M., Bieńkowski A., Szewczyk R.
Acta Physica Polonica A
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2017
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vol. 131
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issue 4
1066-1068
EN
The following paper presents original results of study on the magnetoelastic properties of Ni-Zn (nickel-zinc) ferrite material under low magnetizing fields, corresponding to the so-called Rayleigh region. The investigated Ni_{0.36}Zn_{0.64}Fe₂O₄ material was formed into frame-shape sample allowing to obtain uniform stress distribution. Special digitally controlled measurement system was utilized to perform investigation. Obtained results are presented in the paper. On the basis of them mathematical description of magnetoelastic effect in investigated material was developed as an extend of the Rayleigh model of magnetic hysteresis. Comparison of the experimental and modeling results indicates that the developed model is correct.
8
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Magnetoelastic Villari Effect in Ferrite Materials for Force and Stress Sensors Working in Low Magnetizing Field Region

100%
Kachniarz M., Bieńkowski A., Salach J., Szewczyk R.
Acta Physica Polonica A
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2018
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vol. 133
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issue 4
1056-1059
EN
The following paper presents the original results of investigation on the magnetoelastic properties of ferrite materials magnetized in low field region, which could be utilized in development of force and stress sensors. The objects of investigation were two ferrite materials (manganese-zinc Mn-Zn and nickel-zinc Ni-Zn). The magnetoelastic characteristics of the materials were investigated with the special measurement system, allowing measurement of magnetic parameters of the ferrite materials magnetized with low fields under the influence of the compressive stress. The obtained results indicate that there is a strong correlation between the magnetic properties of the material in low magnetizing field region, and applied mechanical stress, which allows development of the magnetoelastic stress or force sensor with ferrite core working in low magnetizing field region.
9
Content available remote

New Method of Measurement of the Magnetoelastic Characteristics for Tensile Stresses

88%
Salach J., Szewczyk R., Bieńkowski A., Kolano-Burian A., Falkowski M.
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issue 5
775-777
EN
The paper presents a novel method of measurements of tensile stress dependence of the magnetic characteristics of ring-shaped cores made of soft amorphous alloys. In the presented method, the uniform tensile stress was applied perpendicularly to the magnetizing field direction. Magnetoelastic core with closed magnetic circuit was fixed on the non-magnetic backings enabling the conversion of compressive force into tensile stresses as well as it enables the core to be winded by magnetizing and sensing windings. Magnetoelastic characteristics measured under tensile stress, for Fe_{25}Ni_{55}Si_{10}B_{10} alloy annealed in temperature 350°C for 1 h, are presented in this paper. The presented results indicate high tensile stress sensitivity of Fe_{25}Ni_{55}Si_{10}B_{10} alloy. Moreover, together with magnetoelastic characteristics for compressive stresses (presented previously in the literature), the describes results create possibility of further development of models of the magnetoelastic effects in amorphous alloys.
10
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Amorphous Soft Magnetic Fe_{80}B_{11}Si_{9} Alloy in Tensile Stress Sensors Application

88%
Salach J., Jackiewicz D., Bieńkowski A., Szewczyk R., Gruszecka M.
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vol. 126
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issue 1
102-103
EN
Paper presents the results of investigations of the influence of the tensile stresses on magnetic characteristics of Fe_{80}B_{11}Si_{9} amorphous alloy in as quenched and annealed state. For the tests, a special methodology of application of uniform tensile stresses to the ring shaped sample was developed. Due to special non-magnetic pads, the magnetizing and sensing coils can be wound around the core. Experimental results indicate high stress sensitivity of Fe_{80}B_{11}Si_{9} alloy in both as-quenched and annealed state. Permeability of the core decreases over 64% and 58% for as-quenched and annealed core respectively, especially for lower values of the amplitude of magnetizing field.
11
Content available remote

Functional Properties of Monolayer and Bilayer Graphene Hall-Effect Sensors

76%
Kachniarz M., Petruk O., Salach J., Ciuk T., Strupiński W., Bieńkowski A., Szewczyk R.
Acta Physica Polonica A
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2017
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vol. 131
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issue 5
1250-1253
EN
The paper describes the design, development, and investigation of a new type of Hall-effect sensors of a magnetic field made of graphene. The epitaxial growth of high-quality graphene structures was performed using a standard hot-wall CVD reactor, which allows for easy integration with an existing semiconductors production technologies. The functional properties of developed Hall-effect sensors based on graphene were investigated on special experimental setup utilizing Helmholtz coils as a source of reference magnetic field. Monolayer and quasi-free-standing bilayer graphene structures were tested. Results presented in the paper indicate that graphene is very promising material for development of Hall-effect sensors. Developed graphene Hall-effect sensor exhibit highly linear characteristics and high magnetic field sensitivity.
12
Content available remote

Influence of Thermomagnetic Treatment on Magnetoelastic Properties of FeNiMoB Amorphous Alloy

64%
Szewczyk R., Svec P., Salach J., Švec P., Bieńkowski A., Hoško J., Jackiewicz D., Kamiński M., Winiarski W.
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vol. 126
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issue 1
52-53
EN
Paper presents the results of magnetoelastic tests of ring-shaped cores made of Fe_{40}Ni_{38}Mo_{4}B_{18} amorphous alloy. The cores were subjected to thermomagnetic annealing under different values of magnetic field. The obtained results enabled us to connect the magnetoelastic characteristics of Fe_{40}Ni_{38}Mo_{4}B_{18} amorphous alloy with the conditions of thermomagnetic treatment of the material.
13
Content available remote

The Influence of Thermomagnetic Treatment on the Magnetoelastic Characteristics of Fe₆₁Co₁₉Si₅B₁₅ Amorphous Alloys

64%
Salach J., Szewczyk R., Svec Sr P., Bieńkowski A., Jackiewicz D., Svec P., Nowicki M., Winiarski W., Kachniarz M., Gruszecka M.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
617-619
EN
Information about magnetoelastic properties of newly developed amorphous magnetic alloys is very important from practical point of view, especially in the case of high permeability materials such as the Fe₆₁Co₁₉Si₅B₁₅ amorphous alloy. In the case of such materials, effect connected with the influence of external stresses on the magnetic properties of the alloy should be tested. This paper presents experimental results of the magnetoelastic properties investigation of the Fe₆₁Co₁₉Si₅B₁₅ amorphous alloy, annealed without magnetic field as well as in the magnetic field. Such thermo-magnetic treatment generated anisotropy has significant influence on the total free energy of magnetic material. In the magnetoelastic investigation, the compressive stress was applied to the ring shaped core, perpendicularly to the magnetizing field direction. Due to the fact, that cores with closed magnetic circuits were used, demagnetization did not change the balance of total free energy in the material.
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