DOI: 10.1063/1.361693. Transmission electron microscopy of Terfenol-D crystals

Transmission electron microscopy of Terfenol-D crystals

10.1063/1.361693

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Magnetic domain and microstructure observations are presented from samples of pseudo-single-crystal Terfenol-D examined by transmission electron microscopy (TEM). This ternary alloy is of significant technological interest since it exhibits the highest known magnetostriction to anisotropy ratio near room temperature. Specimens for TEM studies in (110), (111), and (112) orientations have also shown regions of unusual diffraction contrast in bright field which appears to be very sensitive to specimen tilt. Lorentz mode TEM has subsequently shown such regions to correspond exactly with magnetic domains. This contrast is attributed to the high magnetostrictive strain causing a local distortion of the lattice and thus a local deviation from the Bragg condition. This conclusion has been investigated and supported by TEM observations with the samples cooled below the spin reorientation temperature. When this transition is reached the diffraction contrast in bright field is considerably decreased and cannot be made to vary by tilting the specimen. The latter experiments also indicate that the change from 〈111〉 to 〈100〉 easy axis is not a well-defined one but, rather, that the spin reorientation is a sluggish change. High-resolution lattice images show the coherency of the twin boundaries.

Bibliography

Holden, A. P., Lord, D. G., & Grundy, P. J. (1996). Transmission electron microscopy of Terfenol-D crystals. Journal of Applied Physics, 79(8), 4650â4652.

Authors 3

A. P. Holden (first)
D. G. Lord (additional)
P. J. Grundy (additional)

References 7 Referenced 21

10.1063/1.348938 / J. Appl. Phys. (1991)
10.1063/1.352738 / J. Appl. Phys. (1993)
{'key': '2024020216205984100_r3'}
{'key': '2024020216205984100_r4'}
10.1103/PhysRevB.7.4220 / Phys. Rev. B (1973)
{'key': '2024020216205984100_r6', 'first-page': '2583', 'volume': 'MAG-26', 'year': '1990', 'journal-title': 'IEEE Trans. Magn.'} / IEEE Trans. Magn. (1990)
10.1002/pssa.2210730208 / Phys. Status Solidi A (1982)

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:50 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 12:34 p.m.)
Indexed	4 weeks ago (Aug. 2, 2025, 12:07 a.m.)
Issued	29 years, 4 months ago (April 15, 1996)
Published	29 years, 4 months ago (April 15, 1996)
Published Print	29 years, 4 months ago (April 15, 1996)

Funders 0

None

BibTeX

@article{Holden_1996, title={Transmission electron microscopy of Terfenol-D crystals}, volume={79}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.361693}, DOI={10.1063/1.361693}, number={8}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Holden, A. P. and Lord, D. G. and Grundy, P. J.}, year={1996}, month=apr, pages={4650–4652} }

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