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2 edition of Magnetic and microstructursl properties of single-crystal Terfenol-D. found in the catalog.

Magnetic and microstructursl properties of single-crystal Terfenol-D.

Muhammed Mekki Al-Jiboory

Magnetic and microstructursl properties of single-crystal Terfenol-D.

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Published by University of Salford in Salford .
Written in English


Edition Notes

PhD thesis, Physics.

SeriesDX175955
ID Numbers
Open LibraryOL21682690M

Magnetostriction (cf. electrostriction) is a property of magnetic materials that causes them to change their shape or dimensions during the process of variation of materials' magnetization due to the applied magnetic field changes the magnetostrictive strain until reaching its saturation value, effect was first identified in by James Joule when observing a sample. Recently it was discovered that composites of Terfenol‐D alloys with an insulating binder produce very large magnetostrictions. Resistivities of these composites reach high values, making them attractive for high‐frequency applications which require small eddy current losses. In this paper the magnetostriction, magnetization, and Young’s moduli measurements made under constant magnetic Cited by:   Transducer materials are a key component of any sonar system. This article compares and explains properties of materials such as nickel, lead zirconate titanate and Terfenol. These materials have been used for transducers over the years and illustrates . : Magnetic Properties of Layered Transition Metal Compounds (Physics and Chemistry of Materials with Low-Dimensional Structures, Vol. 9) (): L. Jos De Jongh: BooksFormat: Hardcover.

Measurements of magnetostriction lambda, magnetic Barkhausen effect (MBE), and magnetic induction B have been made as a function of magnetic field H in a number of specimens of Tb/sub /Dy/sub /Fe/sub / prepared recently at Ames Laboratory. These results showed marked variations in properties from specimen to specimen.


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Magnetic and microstructursl properties of single-crystal Terfenol-D. by Muhammed Mekki Al-Jiboory Download PDF EPUB FB2

Journal of Magnetism and Magnetic Materials () North-Holland ~ of M mam Magnetostrictive and microstructural properties of Terfenol-D prepared by different routes Y.J. Bi, A.M.H.

Hwang and J.S. Abell School of Metallurgy and Materials, University of Birmingham, Birmingham 2TT, UK The effect of preparation route on the microstructural and magnetostrictive properties Cited by: 3.

title = "Magnetomechanical properties of single Magnetic and microstructursl properties of single-crystal Terfenol-D. book Terfenol-D", abstract = "Quasi-static and dynamic magnetomechanical measurements have been made on a twin-free oriented single crystal of TbDyFe2 (Terfenol-D).Cited by:   Rods of the highly magnetostrictive material, Terfenol-D, TbDyFe2, have been prepared by both Bridgman and float zone techniques.

It is found that the dendritic growth front consists of parallel sheets of dendrites growing with a primary direction of and sheet planes of {}. Unseeded rods show a strong preference for alignment of the by: Crystal boules of the magnetostrictive compound Terfenol-D have been grown from nominal compositions of Tb Dy Fe y and Tb Dy Fe y (y =) by the Czochralski technique using an induction-heated cold crucible.

Microstructural characterisation of cross-sections of the boules reveal large equiaxed grains with primary growth directions close to 〈〉.Cited by: Abstract The magnetic properties of a magnetostrictive Terfenol-D rod produced by the hydrogen Decrepitation (HD) process from cast material of composition RFe (R=Tb Dy ) are compared with those of cast and zoned rods of composition RFe The cast RFe alloy disproportionates into α-iron and rare earth hydrides on exposure to hydrogen, the material re-combining on desorption.

Abstract: X-ray diffraction has been used to study the magnetostrictive distortion in single-crystal Terfenol-D. The magnetostriction coefficient and the linear thermal-expansion coefficient have been determined over the temperature range of +or degrees C from observing the change in shape, diffraction angle, and intensity of the.

We considered a Terfenol-D film deposited on a compliant Si substrate ().h and h s are the thicknesses of the Terfenol-D layer and Si substrate, respectively.

As well known, a prestress induced by the thermal expansion or from other stress engineering will great affect the domain formation, magnetization and magnetostriction of the giant magnetic by: 8. The magnetization at 15 kOe (M 15) and the coercive force (H c) are emu/g (which corresponds to T) and 70 Oe, respectively, for the starting induction-melted value of T for M 15 is in good agreement with the value of 1 T for saturation magnetization reported value of 70 Oe for H c is low, indicating that the ingots possess good magnetic by: Microstructural, magnetic Magnetic and microstructursl properties of single-crystal Terfenol-D.

book magnetostrictive properties of Tb Dy Fe prepared by solidification in a high magnetic field Tie Liu et al Journal of Physics D: Applied Physics 46 Cited by: We studied the effect of Dy 3+ content on the magnetic properties of cobalt ferrite single crystal. The single crystals of CoFe Dy O 4 were grown by the flux method using Na 2 B 4 O H 2 O (Borax) as a solvent (flux).

The black and shiny single crystals were obtained as a product. The X-ray diffraction analysis at room temperature confirmed the spinel cubic structure with lattice Cited by: Magnetic and microstructural properties of single crystal terfenol-D.

Author: Al-Jiboory, Muhammed Mekki. ISNI: Awarding Body: University of Salford Current Institution: University of Salford Date of Award: Availability of Full Text. The magnetic field in active magnetostrictive systems is usually generated via electromagnets.

The values of have been measured for Terfenol-D and Galfenol under static magnetic fields. Moffett et al [] first characterized stress- and field-dependence of in monolithic Terfenol-D by measuring magnetostriction versus magnetic field major loops under various mechanical by: 9.

Measured Terfenol-D material properties under varied applied magnetic field levels Marcelo J. Dapino, Frederick T. Calkins, Alison B. Flatau Iowa State University, Department of Aerospace.

Depending on applications, the magnetic anisotropy plays a key role in physical property control. In this paper, the magnetic anisotropy of sputter-deposited Terfenol-D thin films on single-crystal Si substrates was studied by both dynamic torque and magnetization by: 1.

The 〈1 1 1〉 oriented twin-free TbDyFe2 single crystal possesses excellent magnetostrictive properties along the rod direction (〈1 1 1〉) in low magnetic fields and it is very useful. composites containing the Terfenol-D particles (Kaleta,Lo,Schwartz, ).

This involves necessity to examine properties of these new types of composite materials. In this paper we present the investigation on magnetostriction and DC magnetic properties, for Terfenol-D based composites.

The main goal of performed investigations was to. Among GMM, bulk Tb Dy Fe (Terfenol-D) presents a large room temperature strain at relatively low magnetic field (below 40 kA/m), good magneto-mechanical coupling factor, high energy. We present the effects of terbium additives upon the microstructure and magnetic properties of Fe83Ga17Tbx alloys (x = 0,and ), prepared by vacuum electric arc-melting and.

Magnetic and Mechanical Properties of Polycrystalline Galfenol E. Summers∗a, T. Lograssob, J.D. Snodgrass a, J. Slaughtera aEtrema Products Inc., North Loop Drive, Ames, IA, USA bAmes Laboratory-ISU, Ames, IA, USA ABSTRACT The Zone Melt Crystal Growth Method (FSZM) has been used to produce polycrystalline Galfenol specimens,Cited by: Physical properties.

The alloy has the highest magnetostriction of any alloy, up to m/m at saturation; it expands and contracts in a magnetic ol-D has a large magnetostriction force, high energy density, low sound velocity, and a low Young's its most pure form, it also has low ductility and a low fracture resistance.

Yang Y, Liu Q, Jiao Y, Ge Y, Hu Z, Gao Y, Jia G and Zhang J Application of steady magnetic field for refining solidification structure and enhancing mechanical properties of 25Cr–20Ni–Fe–C alloy in centrifugal casting ISIJ Int.

35 – CrossrefAuthor: W S Yip, S To. The issue concerning the nature and the role of microstructural inhomogeneities in iron chalcogenide superconducting crystals of FeTe Se and their correlation with transport properties of this system was addressed.

The presented data demonstrate that chemical disorder originating from the kinetics of the crystal growth process significantly influences the superconducting properties Cited by: 5.

Microstructural, magnetic and magnetostrictive properties of TbDyFe prepared by solidification in a high magnetic field Tie Liu, Yin Liu, Qiang Wang et al.-Recent citations Effect of copper on magnetostriction and mechanical properties of TbDyFe alloys Naijuan Wang et al-Vertical sections of TbHoFey.

A Terfenol-D continuous-fiber composite with a preferred [] crystallographic orientation was fabricated by embedding vol% []-oriented Terfenol-D continuous fibers of 45 mm long and 1 mm.

Microstructure 5 Twin boundary Vacancy Edge dislocation Grain boundary, interface nm–dm α-Phase (bcc lattice) β-Phase (fcc lattice) Figure File Size: 8MB.

Kronmüller, H. (), On the relation between the microstructure and soft and hard magnetic properties, in M. Takahashi et al (eds.), Proc. Int. Symp. on Physics of Magnetic Materials, World Scientific Publishers, Singapore, pp 17– Google ScholarAuthor: P. Grundy. The material properties being investigated, measured directly or calculated from measured quantities, are: two Young's moduli, magnetomechanical coupling factor (or 'figure of merit' of the material), linear coupling coefficient or axial strain coefficient (d 33) and two magnetic permeabilities.

Electrical impedance and admittance and Cited by:   The monolithic giant magnetostrictive material used in this study was a polycrystalline Terfenol-D from TdVib LLC (Ames, Iowa, USA) with its properties shown in Table test samples were machined from a larger piece and the final form was a rectangular bar (Table 2).The specimens tested were a large specimen (TL) and a small specimen (TS) as shown in Fig.

by: 1. This option allows users to search by Publication, Volume and Page Selecting this option will search the current publication in context.

Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher/Society in contextCited by: [] oriented single crystal had a reported modulus of 65 GPa ( Msi), a tensile strength of MPa ( ksi), and an elongation value >2%, however, fracture occurred shortly after this value of strain was reached.

Compare these mechanical property values with Terfenol-D which has a Young’s Modulus of 90 GPa (13 Msi) and a tensile. Terfenol-D manufacturing techniques must meet new criteria, i.e., miniaturization and low cost, while maintaining high strain performance.

Experimental This work is focused on the production of millimeter disks of Terfenol-D (diameter 6 mm, thickness 1 mm) whose in-plane properties (microstructural and magnetic) were measured. FourAuthor: Valentin Issindou, B. Viala, L. Gimeno, O. Cugat, C. Rado, S. Bouat. The sensor head is accomplished by embedding the optical fiber within the magnetostrictive composite.

The operating principle of the sensor relies on the magnetostrictive properties of Terfenol-D. When it is exposed to a magnetic field this material changes size, converting the magnetic energy into mechanical energy, i.e., strain.

The strain Cited by: Amorphous thin films of Terfenol‐D were rf magnetron sputter deposited on () silicon single crystal substrates. A composite target was used to obtain the Terfenol‐D films. Samples were subsequently annealed in the range of to °C in the presence of a Oe magnetic Cited by: 9.

Several composites, with outstanding magnetostrictive properties, have been synthesized combining a polyurethane base elastomer, with polycrystalline powders of Terfenol-D with a preferential orientation obtained by curing the material in a magnetic field.

The morphology of the polymer matrix can be modified by changing the ratio of the hard /soft segment (F) of the polyurethane from to 1. Al-Jiboory, M. and Lord, D.G., Study of the magnetostrictive distortion in single crystal terfenol-D by x-ray diffraction, IEEE Trans –   A new theory is presented of the nonlinear multi-axial magneto-elastic behavior of magnetostrictive particle actuated composite materials.

The analysis assumes a uniform external magnetic field is operating on a large number of well-distributed, crystallographically and shape parallel ellipsoidal magnetostrictive particles encased in an elastic, nonmagnetic composite by: 9.

Terfenol-D manufacturing techniques must meet new criteria, i.e., miniaturization and low cost, while maintaining high strain performance. Experimental This work is focused on the production of millimeter disks of Terfenol-D (diameter 6 mm, thickness 1 mm) whose in-plane properties (microstructural and magnetic) were measured.

Four. Physical Properties of Magnetically Ordered Crystals [Turov, E.A.] on *FREE* shipping on qualifying offers.

Physical Properties of Magnetically Ordered CrystalsCited by: The microstructural and texture studies, therefore, indicate that the improvement in magnetostriction at low V concentration is due to the reduction in the volume fraction of the detrimental properitectic (Tb,Dy)Fe 3 phase and the presence of strong /rotated and grain orientation of (Tb,Dy)Fe 2 higher concentration of V, however, the volume fraction of the (Fe,V) solid solution Author: J.

Arout Chelvane, Mithun Palit, Himalay Basumatary, S. Banumathy, A. Singh, S. Pandian. composite. The operating principle of the sensor relies on the magnetostrictive properties of Terfenol-D. When it is exposed to a magnetic field this material changes size, converting the magnetic energy into mechanical energy, i.e., strain.

The strain induced in the magnetostrictive composite by theCited by:. Magnetic minerals acquire TRM when they are contained within the rock that is cooled in an external magnetic field from temperatures above the minerals’ blocking temperatures.

Blocking of remanent magnetization at a specific temperature results in locking of a specific direction and intensity of magnetization as it becomes stable on the. TERFENOL-D. TERFENOL-D is an intermetallic alloy of the lanthanide elements terbium and dysprosium combined with iron (Fe) and commercially produced as a near-single crystal.

The name combines the symbols for the elements with NOL, derived from the facility of origin.Abstract We measure the high frequency magnetic properties of polymer-bonded Terfenol-D rods compacted from powders of different size, in order to analyze the effect of structure and preparation conditions in sonic or ultrasonic frequency applications.