Influence of Grain Size on Magnetic Properties of Electroplated NiFe

Nickel-Iron nanocrystalline alloys with different grain sizes were fabricated by electrodeposition technique. In this study, influence of the grain size nanocrystalline NiFe deposits on saturation magnetization Ms and coercivity Hc was investigated. Alternating gradient magnetometer (AGM) with up to 10 kOe applied magnetic field was used to study the magnetic properties of NiFe film. The results showed that saturation magnetization Ms and coercivity Hc were affected by grain size variation. Increase in grain size increased the saturation magnetization. The largest grain size of 18.6 nm showed the highest Ms of 138 emu/g, while the smallest grain size of 7.2 nm showed Ms of 94 emu/g. Minimum coercivity of 3.847 Oe was observed for sample with 7.2 nm grain sizes. The coercivities decreased for smaller grain sizes.

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A Novel Type of Magnetic Fe2O3/Fe3O4 Heterogeneous Microparticles Prepared via the Ethanol-Water Reflux and Rapid Combustion Process

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17439 ◽

2020 ◽

Vol 20 (5) ◽

pp. 2998-3003

Author(s):

Jia Liu ◽

Zhou Wang ◽

Yanyan Wang

Keyword(s):

Grain Size ◽

Magnetic Properties ◽

Saturation Magnetization ◽

Calcination Temperature ◽

Ethyl Alcohol ◽

Combustion Process ◽

Key Factors ◽

Absolute Ethyl Alcohol ◽

Grain Sizes ◽

Rapid Combustion

A novel type of magnetic Fe2O3/Fe3O4 heterogeneous microparticles with ellipsoidal macropores was prepared via the ethanol-water reflux and rapid combustion process. The experimental results showed that the volume of absolute ethyl alcohol and the calcination temperature were the key factors to the grain sizes and the magnetic properties, the calcination temperature largely affected the saturation magnetization and the grain size of Fe2O3/Fe3O4 heterogeneous microparticles, and the amount of absolute ethyl alcohol also tremendously affected the saturation magnetization, however, the amount of absolute ethyl alcohol affected little on the grain size. Fe2O3/Fe3O4 heterogeneous microparticles calcined at 200 °C for 1 h with absolute ethyl alcohol of 20 mL had the largest saturation magnetization of 90.1 Am2/kg.

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Magnetic Properties of the Gd1-xTbxNi3 Intermetallic Compounds

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.170.109 ◽

2011 ◽

Vol 170 ◽

pp. 109-113 ◽

Cited By ~ 10

Author(s):

Anna Bajorek ◽

Grażyna Chełkowska ◽

Artur Chrobak ◽

Marzena Kwiecień-Grudziecka

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Curie Temperature ◽

Saturation Magnetization ◽

Intermetallic Compounds ◽

Applied Magnetic Field ◽

Magnetic Measurements ◽

Zero Field ◽

Zero Field Cooling ◽

Field Cooling

The paper presents selected magnetic properties of the Gd1-xTbxNi3 intermetallic compounds. Based on the wide-ranging SQUID magnetometer (Quantum Design MPMS, temperature from 1.9K to 300K and magnetic field up to 7T) series of different magnetic measurements were carried out. In studied system the saturation magnetization and the Curie temperature strongly depends of Tb concentration. Moreover, the so-called field cooling - zero field cooling (FC-ZFC) curves reveal a dependence of M(T) on the applied magnetic field. The thermomagnetic curves indicate interesting behaviour which is typical for terbium compounds and can be ascribed to the interaction between different aligned magnetic subblattices.

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Exact magnetic properties for classical delta-chains with ferromagnetic and antiferromagnetic interactions in applied magnetic field

Physical Review B ◽

10.1103/physrevb.101.054427 ◽

2020 ◽

Vol 101 (5) ◽

Cited By ~ 1

Author(s):

D. V. Dmitriev ◽

V. Ya. Krivnov ◽

J. Schnack ◽

J. Richter

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Applied Magnetic Field

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High Saturation Magnetization and Soft Magnetic Properties of bcc Fe–Zr–B and Fe–Zr–B–M (M=Transition Metal) Alloys with Nanoscale Grain Size

Materials Transactions JIM ◽

10.2320/matertrans1989.32.93 ◽

1991 ◽

Vol 32 (1) ◽

pp. 93-102 ◽

Cited By ~ 306

Author(s):

K. Suzuki ◽

A. Makino ◽

N. Kataoka ◽

A. Inoue ◽

T. Masumoto

Keyword(s):

Grain Size ◽

Magnetic Properties ◽

Transition Metal ◽

Saturation Magnetization ◽

Metal Alloys ◽

Soft Magnetic Properties ◽

High Saturation Magnetization ◽

Soft Magnetic ◽

Transition Metal Alloys ◽

High Saturation

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Research on Effects of Mo Element on the Magnetic Properties of 1J79 Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.160-162.1787 ◽

2010 ◽

Vol 160-162 ◽

pp. 1787-1790

Author(s):

Jing Cao ◽

Yong Feng Wang ◽

Chun Xue Wei

Keyword(s):

Grain Size ◽

Magnetic Properties ◽

Crystal Growth ◽

Saturation Magnetization ◽

Electron Probe ◽

Electric Arc ◽

Experimental Results ◽

Vibrating Sample Magnetometer ◽

Electron Probe Microanalyzer ◽

Mo Content

1J79 alloy was prepared by vacuum electric arc smelting．The crystal growth and the content of impurity was observed by electron probe microanalyzer，and magnetic properties were measured by vibrating sample magnetometer(VSM)．Experimental results show that inclusions in the alloy are fewer and fewer, composition becomes more uniform with the increases of the Mo content, and grain size also becomes larger and larger with the increases of Mo content, to reduce coercivity. The small amount of Mo addition is useful to improve the saturation magnetization and reduce coercivity．

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II. The thermomagnetic analysis of meteoric and artificial nickel-iron alloys

Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character ◽

10.1098/rsta.1908.0015 ◽

1908 ◽

Vol 208 (427-440) ◽

pp. 21-109 ◽

Cited By ~ 3

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Quantitative Study ◽

Published Data ◽

Natural Origin ◽

Nickel Iron ◽

Thermomagnetic Analysis ◽

Appreciable Quantity ◽

Variable Permeability ◽

Cosmic Origin

The experiments described in this paper arose from the desire of Sir Arthur W. Rücker to obtain, in connection with his researches on the nature of the Earth’s magnetic field, further data concerning the properties of such magnetic materials of natural origin as may he present in appreciable quantity in the Earth’s crust. Iron of cosmic origin contains nearly always an appreciable quantity of nickel, and the magnetic properties of this material, especially their variation with temperature, have received very little attention. Most of the published data are qualitative only, and from them no very definite conclusion can be drawn beyond the fact that meteoric iron appears to be of very variable permeability. It was, therefore, thought desirable to make a careful quantitative study of a typical example of such material.

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