Bulk Fe-based metallic glass with extremely soft ferromagnetic properties

T. D. Shen; U. Harms; R. B. Schwarz

Bulk Fe-based metallic glass with extremely soft ferromagnetic properties

T. D. Shen
, U. Harms
, R. B. Schwarz

Los Alamos National Laboratory

Research output: Contribution to journal › Conference article › peer-review

45 Scopus citations

Abstract

We have investigated the DC and AC magnetic properties of a bulk glassy Fe_65.5Cr₄Mo₄Ga₄ P₁₂B_5.5C₅ alloy. In the annealed state the alloy has coercivity H_C and maximum DC permeability μ_m of approximately 0.4 A/m (5 mOe) and 2.8×10⁵, comparable to those found in annealed zero-magnetostriction Co-based alloys. The low H_C found in our bulk glassy alloy is attributed to the low ratio of surface-roughness to sample thickness, and low residual internal-stress. The total power loss in our annealed bulk glass is about one order of magnitude lower than that of rapidly quenched Fe-based glassy ribbons. This is attributed to a low anomalous eddy-current loss.

Original language	English
Pages (from-to)	441-446
Number of pages	6
Journal	Materials Science Forum
Volume	386-388
State	Published - Feb 19 2002
Event	Proceedings of the International Symposium on Metastable, Mechanically Alloyed and Noncrystalline Materials (ISMANAM) - Duration: Feb 19 2002 → …

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@article{40405e8b7a4e4dd0b281b803b659f5c0,

title = "Bulk Fe-based metallic glass with extremely soft ferromagnetic properties",

abstract = "We have investigated the DC and AC magnetic properties of a bulk glassy Fe65.5Cr4Mo4Ga4 P12B5.5C5 alloy. In the annealed state the alloy has coercivity HC and maximum DC permeability μm of approximately 0.4 A/m (5 mOe) and 2.8{\texttimes}105, comparable to those found in annealed zero-magnetostriction Co-based alloys. The low HC found in our bulk glassy alloy is attributed to the low ratio of surface-roughness to sample thickness, and low residual internal-stress. The total power loss in our annealed bulk glass is about one order of magnitude lower than that of rapidly quenched Fe-based glassy ribbons. This is attributed to a low anomalous eddy-current loss.",

author = "Shen, \{T. D.\} and U. Harms and Schwarz, \{R. B.\}",

year = "2002",

month = feb,

day = "19",

language = "English",

volume = "386-388",

pages = "441--446",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd",

note = "Proceedings of the International Symposium on Metastable, Mechanically Alloyed and Noncrystalline Materials (ISMANAM) ; Conference date: 19-02-2002",

}

TY - JOUR

T1 - Bulk Fe-based metallic glass with extremely soft ferromagnetic properties

AU - Shen, T. D.

AU - Harms, U.

AU - Schwarz, R. B.

PY - 2002/2/19

Y1 - 2002/2/19

N2 - We have investigated the DC and AC magnetic properties of a bulk glassy Fe65.5Cr4Mo4Ga4 P12B5.5C5 alloy. In the annealed state the alloy has coercivity HC and maximum DC permeability μm of approximately 0.4 A/m (5 mOe) and 2.8×105, comparable to those found in annealed zero-magnetostriction Co-based alloys. The low HC found in our bulk glassy alloy is attributed to the low ratio of surface-roughness to sample thickness, and low residual internal-stress. The total power loss in our annealed bulk glass is about one order of magnitude lower than that of rapidly quenched Fe-based glassy ribbons. This is attributed to a low anomalous eddy-current loss.

AB - We have investigated the DC and AC magnetic properties of a bulk glassy Fe65.5Cr4Mo4Ga4 P12B5.5C5 alloy. In the annealed state the alloy has coercivity HC and maximum DC permeability μm of approximately 0.4 A/m (5 mOe) and 2.8×105, comparable to those found in annealed zero-magnetostriction Co-based alloys. The low HC found in our bulk glassy alloy is attributed to the low ratio of surface-roughness to sample thickness, and low residual internal-stress. The total power loss in our annealed bulk glass is about one order of magnitude lower than that of rapidly quenched Fe-based glassy ribbons. This is attributed to a low anomalous eddy-current loss.

UR - https://www.scopus.com/pages/publications/0036168710

M3 - Conference article

SN - 0255-5476

VL - 386-388

SP - 441

EP - 446

JO - Materials Science Forum

JF - Materials Science Forum

T2 - Proceedings of the International Symposium on Metastable, Mechanically Alloyed and Noncrystalline Materials (ISMANAM)

Y2 - 19 February 2002

ER -

Bulk Fe-based metallic glass with extremely soft ferromagnetic properties

Abstract

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