Induced magnetic anisotropy and thickness dependence of magnetic properties in nanocrystalline alloy "finemet".

For nanocrystalline alloy Fe73.5Cu1Nb3Si13.5B9 thermomechanical treatment was carried out simultaneously with nanocrystallizing annealing (1) or after it (2). It was shown that a change in magnetic properties for the case 1 is essentially greater than for the case 2. Complex effect of thermomagnetic and thermomechanical treatments on magnetic properties was studied in the above-mentioned nanocrystalline alloy as well as in the amorphous alloy Fe5Co70.6Si15B9.4., During the annealings both field and stress were aligned with the long side of the specimens. It was shown that the magnetic field, AC or DC, decreases an effect of loading. Moreover, the magnetic field, AC or DC, applied after stress-annealing can destroy the magnetic anisotropy already induced under load.

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Magnetic Properties and Structure of the Alloy Fe63.5Ni10Cu1Nb3Si13.5B9 with Induced Magnetic Anisotropy

The Physics of Metals and Metallography ◽

10.1134/s0031918x21060077 ◽

2021 ◽

Vol 122 (6) ◽

pp. 533-539

Author(s):

V. A. Lukshina ◽

N. V. Dmitrieva ◽

E. G. Volkova ◽

D. A. Shishkin

Keyword(s):

Magnetic Properties ◽

Magnetic Anisotropy ◽

Induced Magnetic Anisotropy

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Thermal Stability of Field- and Stress-Induced Anisotropy in Nanocrystalline Fe-Based and Amorphous Co-Based Alloys

Textures and Microstructures ◽

10.1155/tsm.32.281 ◽

1999 ◽

Vol 32 (1-4) ◽

pp. 281-287 ◽

Cited By ~ 1

Author(s):

N. V. Dmitrieva ◽

V. A. Lukshina ◽

G. V. Kurlyandskaya ◽

A. P. Potapov

Keyword(s):

Thermal Stability ◽

Magnetic Anisotropy ◽

Amorphous Alloys ◽

Nanocrystalline Alloy ◽

Induced Anisotropy ◽

External Effects ◽

Nanocrystalline And Amorphous ◽

Induced Magnetic Anisotropy ◽

Stress Induced Anisotropy ◽

Thermal Stability Of

Thermal stability of induced magnetic anisotropy (IMA) was studied in a course of subsequent annealings without any external effects for already field- or stress-annealed specimens of the nanocrystalline Fe73.5Cu1Nb3Si13.5B9 and amorphous Fe3Co67Cr3Si15B12 alloys. For these alloys the dependence of IMA thermal stability on the magnitude of the IMA constant (Ku) and temperature of stress-annealing was investigated. For the nanocrystalline alloy thermal stability of field- and stress-induced anisotropy with identical Ku was compared. It was shown that nanocrystalline specimens with identical Ku values after field- or stress-annealing have identical thermal stability of IMA. This can point to a similarity of the mechanisms of IMA formation after field- or stress-annealings. Thermal stability of stress-induced anisotropy in the nanocrystalline alloy with Ku value less than 1000 J/m3 and the amorphous alloy with Ku less than 100 J/m3 depends on the value of Ku. For both stress-annealed nanocrystalline and amorphous alloys magnetic anisotropy induced at higher temperatures is more stable because more long-range and energy-taking processes take place at these temperatures.

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Surface-Step-Induced Magnetic Anisotropy in Epitaxial LSMO Deposited on Engineered STO Surfaces

Materials ◽

10.3390/ma13184148 ◽

2020 ◽

Vol 13 (18) ◽

pp. 4148

Author(s):

Jakub Pawlak ◽

Antoni Żywczak ◽

Jarosław Kanak ◽

Marek Przybylski

Keyword(s):

Magnetic Properties ◽

Magnetic Anisotropy ◽

Deionized Water ◽

Interface Engineering ◽

Buffer Solution ◽

Surface Step ◽

Acid Buffer ◽

Oxygen Treatment ◽

Induced Magnetic Anisotropy ◽

Temperature Strain

Changes in stoichiometry, temperature, strain and other parameters dramatically alter properties of LSMO perovskite. Thus, the sensitivity of LSMO may enable control of the magnetic properties of the film. This work demonstrates the capabilities of interface engineering to achieve the desired effects. Three methods of preparing STO substrates were conducted, i.e., using acid, buffer solution, and deionized water. The occurrence of terraces and their morphology depend on the preparation treatment. Terraces propagate on deposited layers and influence LSMO properties. The measurements show that anisotropy depends on the roughness of the substrate, the method of preparing the substrate, and oxygen treatment. The collected results suggest that the dipolar mechanism may be the source of LSMO anisotropy.

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