Study of magnetization in compacted amorphous and nanocrystalline alloy Fe/sub 73.5/Cu/sub 1/Nb/sub 3/Si/sub 13.5/B/sub 9/

Oleg Heczko, Pekka Ruuskanen, Kraus Ludek, Vladimir Haslar

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The bulk amorphous FINEMET was prepared from ribbon and powder by shock wave compaction. The magnetization of compacts was measured up to 550/spl deg/C. The Curie and crystallization temperature was 350/spl deg/C and 495/spl deg/C respectively. From the magnetization curves of as-compacted and annealed samples measured at room temperature in the external magnetic field up to 1.8 T, the effective anisotropy and the law of approach to saturation was derived The deviation from saturation was ascribed to the stress related structural defects in ribbon compacts with prevailing effect of the point-like defects. In the powder compacts the deviation was caused by the intrinsic magnetostatic fluctuations due to spatial inhomogeneity.
Original languageEnglish
Pages (from-to)513-515
Number of pages3
JournalIEEE Transactions on Magnetics
Volume30
Issue number2
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

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Nanocrystalline alloys
Amorphous alloys
Powders
Magnetization
Defects
Magnetostatics
Crystallization
Shock waves
Compaction
Anisotropy
Magnetic fields
Temperature

Cite this

Heczko, Oleg ; Ruuskanen, Pekka ; Ludek, Kraus ; Haslar, Vladimir. / Study of magnetization in compacted amorphous and nanocrystalline alloy Fe/sub 73.5/Cu/sub 1/Nb/sub 3/Si/sub 13.5/B/sub 9/. In: IEEE Transactions on Magnetics. 1994 ; Vol. 30, No. 2. pp. 513-515.
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abstract = "The bulk amorphous FINEMET was prepared from ribbon and powder by shock wave compaction. The magnetization of compacts was measured up to 550/spl deg/C. The Curie and crystallization temperature was 350/spl deg/C and 495/spl deg/C respectively. From the magnetization curves of as-compacted and annealed samples measured at room temperature in the external magnetic field up to 1.8 T, the effective anisotropy and the law of approach to saturation was derived The deviation from saturation was ascribed to the stress related structural defects in ribbon compacts with prevailing effect of the point-like defects. In the powder compacts the deviation was caused by the intrinsic magnetostatic fluctuations due to spatial inhomogeneity.",
author = "Oleg Heczko and Pekka Ruuskanen and Kraus Ludek and Vladimir Haslar",
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Study of magnetization in compacted amorphous and nanocrystalline alloy Fe/sub 73.5/Cu/sub 1/Nb/sub 3/Si/sub 13.5/B/sub 9/. / Heczko, Oleg; Ruuskanen, Pekka; Ludek, Kraus; Haslar, Vladimir.

In: IEEE Transactions on Magnetics, Vol. 30, No. 2, 1994, p. 513-515.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Ludek, Kraus

AU - Haslar, Vladimir

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AB - The bulk amorphous FINEMET was prepared from ribbon and powder by shock wave compaction. The magnetization of compacts was measured up to 550/spl deg/C. The Curie and crystallization temperature was 350/spl deg/C and 495/spl deg/C respectively. From the magnetization curves of as-compacted and annealed samples measured at room temperature in the external magnetic field up to 1.8 T, the effective anisotropy and the law of approach to saturation was derived The deviation from saturation was ascribed to the stress related structural defects in ribbon compacts with prevailing effect of the point-like defects. In the powder compacts the deviation was caused by the intrinsic magnetostatic fluctuations due to spatial inhomogeneity.

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