On the Magnetization Process in an Iron-Phosphorus-Carbon Amorphous Ferromagnet

Fujimori, H.; Masumoto, T.; Obi, Y.; Kikuchi, Michio

doi:10.1143/jjap.13.1889

Cited by 129 publications

(21 citation statements)

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“…Table 2 shows the magnetic properties of the conventional Fe-(Co, Ni, Al, Ga)-(B, Si, C, P) amorphous alloys. [25][26][27][28][29][30][31][32][33][34][35][36] The data of H c in Tables 1 and 2 show the values after annealing with no-magnetic field. Since H c of the (Fe, Ni)-or (Fe, Co)-based amorphous alloys strongly depend on induced magnetic anisotropies, only J s and s are discussed here.…”

Section: Magnetic Properties Of Glassymentioning

confidence: 99%

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

2003

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The magnetic properties of the glassy Fe-(Al, Ga)-(P, C, B, Si, Ge) alloys have been compared with those of the conventional Fe-based amorphous alloys to clarify the feature of the glassy alloys as a soft magnetic material. The glassy Fe-(Al, Ga)-(P, C, B, Si, Ge) alloys exhibit lower saturation magnetization (J s ) than that of the conventional Fe-(B, Si, C) amorphous alloys with the same Fe content. The glassy alloys also have larger saturation magnetostriction constant ( s ) than that of the conventional Fe-based amorphous alloys with the same J s . However, the glassy alloys tend to show relatively low coercivity (H c ) whereas s is large. The theoretical analysis on the basis of domain-wall movement suggests that the low H c originates from the much higher packing density of the glassy alloys than that of the conventional amorphous alloys, which realizes the low density of the quasi-dislocation dipole-type elastic stress sources or the low pinning force due to the elastic stress. The good combination of high glass-forming ability and good soft magnetic properties (especially low H c ) indicates the possibility of future development as new low loss material.

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Section: Magnetic Properties Of Glassymentioning

confidence: 99%

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

2003

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“…Since amorphous alloys in Fe-metalloid system were found to exhibit good soft magnetic properties because of the absence of crystal magnetic anisotropy and grain boundaries in 1974, [1][2][3] a large number of studies on the development of soft magnetic amorphous alloys have been carried out for the subsequent ten years. It is well known that Fe-Si-B and Co-Fe-Si-B base amorphous alloys have been used as practical soft magnetic materials of high saturated magnetizationtype and high-permeability-type, respectively.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Fe65Co10Ga5P12C4B4 Bulk Glassy Alloy with Good Soft Magnetic Properties by Spark-Plasma Sintering of Glassy Powder

et al. 2002

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With the aim of developing a large size bulk glassy Fe-based alloy with good soft magnetic properties by the powder metallurgy technique, we have applied the spark-plasma sintering technique to a Fe 65 Co 10 Ga 5 P 12 C 4 B 4 glassy alloy powder with a large supercooled liquid region of 50 K before crystallization. The existence of the supercooled liquid region enabled us to form a large size bulk glassy alloy of 20 mm in diameter and 5 mm in thickness with a high relative density of 99%. The resulting bulk glassy alloy exhibits good soft magnetic properties, i.e., 1.20 T for saturation magnetization, 14 A/m for coercive force and 6000 for maximum permeability. The good soft magnetic properties for the multicomponent Fe-based bulk alloy are attributed to the combination of the high relative density and the maintenance of the single glassy structure. The success of forming the large size bulk glassy alloy with good soft magnetic properties by the powder metallurgy techniques is promising for future use as practical soft magnetic materials.

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“…Metallic glasses (MG) or metallic amorphous alloys have attracted attention due to their unique soft magnetic properties and low cost which makes them applicable in the field of power engineering [1][2][3]. The unique properties of these materials are mostly caused by the lack of long-range atomic order.…”

Section: Introductionmentioning

confidence: 99%

Temperature Behaviour of Hyperfine Magnetic Fields in a Fe-Co-Si-B-Mo-P Metallic Glass Followed with ^{57}Fe Mössbauer Spectrometry

et al. 2017

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Amorphous glass with nominal chemical composition Fe51Co12Si16B8Mo5P8 was studied by combination of the Mössbauer spectroscopy and magnetic measurements in order to characterize magnetic and structural features. Temperature evolution of the Mössbauer spectra revealed presence of broad distribution of hyperfine magnetic field at lower temperatures which vanishes with increase of temperature. The Curie temperature estimated from the Mössbauer spectroscopy experiments is TC ≈ 392 K. This value is in a good agreement with that obtained by magnetic measurements (TC = 397 K). The Mössbauer spectroscopy spectra of the sample annealed at 823 K revealed a presence of crystalline components. This temperature is notably lower than the expected temperature of the onset of crystallization observed by differential scanning calorimetry (≈ 835 K).

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On the Magnetization Process in an Iron-Phosphorus-Carbon Amorphous Ferromagnet

Cited by 129 publications

References 0 publications

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

Preparation of Fe<SUB>65</SUB>Co<SUB>10</SUB>Ga<SUB>5</SUB>P<SUB>12</SUB>C<SUB>4</SUB>B<SUB>4</SUB> Bulk Glassy Alloy with Good Soft Magnetic Properties by Spark-Plasma Sintering of Glassy Powder

Temperature Behaviour of Hyperfine Magnetic Fields in a Fe-Co-Si-B-Mo-P Metallic Glass Followed with ^{57}Fe Mössbauer Spectrometry

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