Magnetostrictive materials and method for improving AC characteristics in same

Pulvirenti, Patricia P; Jiles, David C

Title: Magnetostrictive materials and method for improving AC characteristics in same

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873927

Pulvirenti, Patricia P ^[1]; Jiles, David C ^[2]

Chicago, IL
Ames, IA

The present invention provides Terfenol-D alloys ("doped" Terfenol) having optimized performances under the condition of time-dependent magnetic fields. In one embodiment, performance is optimized by lowering the conductivity of Terfenol, thereby improving the frequency response. This can be achieved through addition of Group III or IV elements, such as Si and Al. Addition of these types of elements provides scattering sites for conduction electrons, thereby increasing resistivity by 125% which leads to an average increase in penetration depth of 80% at 1 kHz and an increase in energy conversion efficiency of 55%. The permeability of doped Terfenol remains constant over a wider frequency range as compared with undoped Terfenol. These results demonstrate that adding impurities, such as Si and Al, are effective in improving the ac characteristics of Terfenol. A magnetoelastic Gruneisen parameter, .gamma..sub.me, has also been derived from the thermodynamic equations of state, and provides another means by which to characterize the coupling efficiency in magnetostrictive materials on a more fundamental basis.

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Research Organization:: Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)

DOE Contract Number:: W-7405-ENG-82

Assignee:: Iowa State University Research Foundation, Inc. (Ames, IA)

Patent Number(s):: US 6273965

Application Number:: 08/953,192

OSTI ID:: 873927

Country of Publication:: United States

Language:: English

References (33)

Enhanced differential magnetostrictive response in annealed Terfenol‐D Galloway, N.; Schulze, M. P.; Greenough, R. D. Applied Physics Letters, Vol. 63, Issue 6 https://doi.org/10.1063/1.110776	journal	August 1993
Chapter 3 Rare earth metals and alloys Legvold, S. Handbook of Ferromagnetic Materials, Vol. 1, p. 183-295 https://doi.org/10.1016/S1574-9304(05)80118-X	book	January 1980
The effect of composition and magnetic heat treatment on the magnetostriction of Tb _x Dy ₁ ₋ _x Fe _y twinned single crystals Verhoeven, J. D.; Ostenson, J. E.; Gibson, E. D. Journal of Applied Physics, Vol. 66, Issue 2 https://doi.org/10.1063/1.343496	journal	July 1989
Fundamentals of Magnetostriction Cullity, B. D. JOM, Vol. 23, Issue 1 https://doi.org/10.1007/BF03355677	journal	January 1971
X-ray topography observation of a Dy0.73Tb0.27Fe1.95 crystal Lord, D. G.; Savage, H. T.; Rosemeier, R. G. Journal of Magnetism and Magnetic Materials, Vol. 29, Issue 1-3 https://doi.org/10.1016/0304-8853(82)90230-X	journal	October 1982
Anisotropie magnétique superficielle et surstructures d'orientation Néel, Louis Journal de Physique et le Radium, Vol. 15, Issue 4 https://doi.org/10.1051/jphysrad:01954001504022500	journal	January 1954
Magnetostriction of rare earth-Fe2 laves phase compounds Clark, A. E.; Abbundi, R.; Savage, H. T. Physica B+C, Vol. 86-88 https://doi.org/10.1016/0378-4363(77)90231-5	journal	January 1977
Magnetostriction of Tb Single Crystals Rhyne, J. J.; Legvold, S. Physical Review, Vol. 138, Issue 2A https://doi.org/10.1103/PhysRev.138.A507	journal	April 1965
Eddy current loss factor series for magnetostrictive rods Butler, John L.; Lizza, Nicholas L. The Journal of the Acoustical Society of America, Vol. 82, Issue 1 https://doi.org/10.1121/1.395525	journal	July 1987
Giant Room-Temperature Magnetostrictions in Tb ${Fe}_{2}$ and Dy ${Fe}_{2}$ Clark, A. E.; Belson, H. S. Physical Review B, Vol. 5, Issue 9 https://doi.org/10.1103/PhysRevB.5.3642	journal	May 1972
Magnetostrictive properties of Tb/sub 0.3/Dy/sub 0.7/(Fe/sub 1-x/V/sub x/)/sub 2/ alloys Chin, T. S.; Chen, F. M.; Fang, J. S. IEEE Transactions on Magnetics, Vol. 33, Issue 5 https://doi.org/10.1109/20.619624	journal	January 1997
The effects of boron on the magnetostrictive properties of Tb0.27Dy0.73Fe2 Wu, Lei; Zhan, Wenshan; Chen, Xicheng Journal of Alloys and Compounds, Vol. 216, Issue 1 https://doi.org/10.1016/0925-8388(94)91046-4	journal	December 1994
Characterisation of magnetostrictive materials with computer modelling Reed, I. M.; Greenough, R. D.; Schulze, M. P. IEEE Transactions on Magnetics, Vol. 29, Issue 6 https://doi.org/10.1109/20.281008	journal	November 1993
Magnetic and Magnetoelastic Properties of Highly Magnetostrictive Rare Earth-Iron Laves Phase Compounds Clark, A. E. MAGNETISM AND MAGNETIC MATERIALS — 1973: Nineteenth Annual Conference https://doi.org/10.1063/1.2947192	conference	January 1974
AC losses in grain oriented Tb/sub 0.3/Dy/sub 0.7/Fe/sub 1.95/ Greenough, R. D.; Schulze, M. IEEE Transactions on Magnetics, Vol. 26, Issue 5 https://doi.org/10.1109/20.104919	journal	January 1990
Magnetoelastic effects in rare‐earth iron‐aluminum compounds Prajapati, K.; Jenner, A. G.; Schulze, M. P. Journal of Applied Physics, Vol. 73, Issue 10 https://doi.org/10.1063/1.352739	journal	May 1993
Barkhausen effect and discontinuous magnetostriction in Terfenol‐D Jiles, D. C.; Ostenson, J. E.; Owen, C. V. Journal of Applied Physics, Vol. 64, Issue 10 https://doi.org/10.1063/1.342356	journal	November 1988
The growth of single crystal terfenol-D crystals Verhoeven, J. D.; Gibson, E. D.; McMasters, O. D. Metallurgical Transactions A, Vol. 18, Issue 3 https://doi.org/10.1007/BF02646156	journal	February 1987
Strength of Terfenol‐D Peterson, D. T.; Verhoeven, J. D.; McMasters, O. D. Journal of Applied Physics, Vol. 65, Issue 9 https://doi.org/10.1063/1.342599	journal	May 1989
Theoretical modelling of the effects of anisotropy and stress on the magnetization and magnetostriction of Tb0.3Dy0.7Fe2 Jiles, D. C.; Thoelke, J. B. Journal of Magnetism and Magnetic Materials, Vol. 134, Issue 1 https://doi.org/10.1016/0304-8853(94)90086-8	journal	May 1994
Ga substitution effect on magnetic and magnetostrictive properties of TbFe ₂ compounds Tang, Y. J.; Feng, Y. B.; Luo, H. L. Journal of Applied Physics, Vol. 76, Issue 10 https://doi.org/10.1063/1.358016	journal	November 1994
Magnetostriction in twinned [112] crystals of Tb.27Dy.73Fe2 Clark, A.; Verhoven, J.; McMasters, O. IEEE Transactions on Magnetics, Vol. 22, Issue 5 https://doi.org/10.1109/TMAG.1986.1064403	journal	September 1986
Enhancement of piezomagnetic response of highly magnetostrictive rare earth-iron alloys at kHz frequencies Pulvirenti, P. P.; Jiles, D. C.; Greenough, R. D. Journal of Applied Physics, Vol. 79, Issue 8 https://doi.org/10.1063/1.362076	journal	January 1996
Rhombohedral distortion in highly magnetostrictive Laves phase compounds Clark, A. E.; Cullen, J. R.; McMasters, O. D. AIP Conference Proceedings Vol. 29 https://doi.org/10.1063/1.30580	conference	January 1976
Physical interpretation of eddy current losses in ferromagnetic materials. II. Analysis of experimental results Bertotti, G. Journal of Applied Physics, Vol. 57, Issue 6 https://doi.org/10.1063/1.334405	journal	March 1985
Anomalous thermal expansion and magnetostriction of single crystal Tb.27Dy.73Fe2 Abbundi, R.; Clark, A. IEEE Transactions on Magnetics, Vol. 13, Issue 5 https://doi.org/10.1109/TMAG.1977.1059598	journal	September 1977
Physical interpretation of eddy current losses in ferromagnetic materials. I. Theoretical considerations Bertotti, G. Journal of Applied Physics, Vol. 57, Issue 6 https://doi.org/10.1063/1.334404	journal	March 1985
Chapter 2 Soft magnetic metallic materials Chin, G. Y.; Wernick, J. H. Handbook of Ferromagnetic Materials, Vol. 2, p. 55-188 https://doi.org/10.1016/S1574-9304(05)80103-8	book	January 1980
Frequency dependence of the piezomagnetic strain coefficient Reed, I. M.; Greenough, R. D.; Jenner, A. G. I. IEEE Transactions on Magnetics, Vol. 31, Issue 6 https://doi.org/10.1109/20.489854	journal	January 1995
Coupled magnetoelastic theory of magnetic and magnetostrictive hysteresis Sablik, M. J.; Jiles, D. C. IEEE Transactions on Magnetics, Vol. 29, Issue 4 https://doi.org/10.1109/20.221036	journal	July 1993
Giant Magnetically Induced Changes in the Elastic Moduli in Tb _.3 Dy _.7 Fe ₂ Clark, A. E.; Savage, H. T. IEEE Transactions on Sonics and Ultrasonics, Vol. 22, Issue 1 https://doi.org/10.1109/T-SU.1975.30775	journal	January 1975
The development of highly magnetostrictive rare earth-iron alloys Jiles, D. C. Journal of Physics D: Applied Physics, Vol. 27, Issue 1 https://doi.org/10.1088/0022-3727/27/1/001	journal	January 1994
Acoustic Resonance of a Rare Earth Iron Magnetostrictive Rod in the Presence of Large Eddy Currents Meeks, S. W.; Timme, R. W. IEEE Transactions on Sonics and Ultrasonics, Vol. 27, Issue 2 https://doi.org/10.1109/T-SU.1980.31148	journal	March 1980

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magnetostrictive
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time-dependent
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Title: Magnetostrictive materials and method for improving AC characteristics in same

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References (33)

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