Microstructure and High-Field Magnetic Properties of Fe-Based Bulk Amorphous Alloys

2018 ◽  
Vol 69 (4) ◽  
pp. 982-985 ◽  
Author(s):  
Katarzyna Bloch
Keyword(s):  
Magnetic Properties ◽  
Magnetic Fields ◽  
Amorphous Alloys ◽  
High Field ◽  
Structural Investigation ◽  
Hysteresis Loops ◽  
Cast State ◽  
X Ray ◽  
Bulk Amorphous Alloys ◽  
High Field Magnetization

In this paper the results of the structural and magnetic properties for bulk amorphous alloys Fe65Co10Y5B20 and Fe63Co10Y7B20 were presented. For the structural investigation was performed by X-ray diffractometry and Mossbauer spectroscopy. It was found that investigated samples were amorphous in the as-cast state. The magnetisation was measured within magnetic fields ranging from 0 to 2T using a vibrating sample magnetometer (VSM). On the basis of the hysteresis loops, the saturation magnetization value and the coercive field were determined.The investigation of the �magnetisation in the area close to ferromagnetic saturation� showed that the magnetisation process in strong magnetic fields is connected with point defects and Holstein-Primakoff paraprocess. Analysis of the high-field magnetization curves has facilitated the calculation of the spin wave stiffness parameter.

Microstructure and Structural Defects of Bulk Amorphous Fe64Co10Y6B20 Alloy

2017 ◽  
Vol 68 (10) ◽  
pp. 2413-2415
Author(s):  
Katarzyna Bloch
Keyword(s):  
Amorphous Alloys ◽  
Structural Defects ◽  
High Magnetic Fields ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Cast State ◽  
Soft Magnetic ◽  
X Ray ◽  
Bulk Amorphous Alloys ◽  
Copper Mould

This paper presents studies relating to the structure and soft magnetic properties of the following bulk amorphous alloys Fe64Co10Y6B20. Samples were prepared by injecting the molten alloy into a water-cooled copper mould in the form of rods. On the basis of the performed X-ray diffraction studies and M�ssbauer spectroscopy, it was found that investigated samples were amorphous in the as-cast state. The influence of structural defects on the magnetization process was investigated within high magnetic fields known as the area of the approach to ferromagnetic saturation.

The Structure and Magnetic Properties of Bulk Amorphous FeCoYB Alloys

2019 ◽  
Vol 70 (1) ◽  
pp. 245-247
Author(s):  
Katarzyna Bloch ◽  
Mateusz Talar
Keyword(s):  
Magnetic Fields ◽  
Structural Investigation ◽  
Curve Analysis ◽  
Structural Defects ◽  
High Magnetic Fields ◽  
Vibrating Sample Magnetometer ◽  
Cast State ◽  
Magnetic Studies ◽  
X Ray ◽  
Initial Magnetization

In this paper the results of the structure and magnetic studies for bulk amorphous Fe62Co10Y8B20 and Fe64Co10Y6B20 alloys were presented. For the structural investigation was performed by X-ray diffractometry. It was found that investigated samples were amorphous in the as-cast state. Using a vibrating sample magnetometer (VSM) the magnetisation within magnetic fields ranging from 0 to 2T was measured. On the basis of these investigations the saturation magnetization value and the coercive field were determined. Basing on initial magnetization curve analysis in the area of so-called approach to ferromagnetic saturation, the type of structural defects having influence on magnetization in high magnetic fields were determined.

Influence of Alloying Additions on Enhancement of Soft Magnetic Properties Effect and Crystallization in FeXSiB (X=Cu, V, Co, Zr, Nb) Amorphous Alloys

2007 ◽  
Vol 130 ◽  
pp. 171-174 ◽  
Author(s):  
Z. Stokłosa ◽  
G. Badura ◽  
P. Kwapuliński ◽  
Józef Rasek ◽  
G. Haneczok ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Crystallization Process ◽  
Annealing Temperature ◽  
Magnetic Measurements ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray ◽  
Second Stage ◽  
Transmission Electron

The crystallization and optimization of magnetic properties effects in FeXSiB (X=Cu, V, Co, Zr, Nb) amorphous alloys were studied by applying X-ray diffraction methods, high resolution transmission electron microscopy (HRTEM), resistometric and magnetic measurements. The temperatures of the first and the second stage of crystallization, the 1h optimization annealing temperature and the Curie temperature were determined for different amorphous alloys. Activation energies of crystallization process were obtained by applying the Kissinger method. The influence of alloy additions on optimization effect and crystallization processes was carefully examined.

Comparative High-Field Magnetization Study of (Sm,Er)2Fe17 and Er2Fe17 Compounds and their Nitrides

2021 ◽  
Vol 1037 ◽  
pp. 148-153
Author(s):  
Lev Aleksandrovich Ivanov ◽  
Michael Paukov ◽  
Irina Tereshina ◽  
Svetlana Veselova ◽  
Olga V. Akimova ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
High Field ◽  
Mechanical Grinding ◽  
Field Magnetization ◽  
High Field Magnetization ◽  
Magnetization Data ◽  
Powder Samples ◽  
Magnetization Behavior ◽  
Grinding Time

Magnetic properties of the R2Fe17 compounds are sensitive to the atomic substitutions and interstitial absorption of nitrogen. In our work, both were combined and their effect on the magnetization behavior of Er2Fe17 compound in magnetic fields up to 58 T was studied. Er2Fe17N2, Sm1.2Er0.8Fe17N2 and Sm1.8Er0.2Fe17N2.1 nitrides were prepared. Magnetization measurements were carried out, mainly on powder samples (excluding Er2Fe17 single crystal). Nanopowders of Sm1.2Er0.8Fe17N2 were obtained by mechanical grinding. The grinding time was varied from 0 to 60 minutes. The strength of the inter-sublattice coupling in samples is estimated by analyzing high-field magnetization data.

HIGH-FIELD MAGNETIZATION OF MICTOMAGNETIC Fe-Zr AMORPHOUS ALLOYS

1983 ◽  
pp. 113-116 ◽  
Author(s):  
Hidetoshi Hiroyoshi ◽  
Kazuaki Fukamichi ◽  
Akira Hoshi ◽  
Yasuaki Nakagawa
Keyword(s):  
Amorphous Alloys ◽  
High Field ◽  
Field Magnetization ◽  
High Field Magnetization

scholarly journals Structural and Magnetic Properties of Ni0.8Fe0.2/Ti Nanoscale Multilayers

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 780 ◽  
Author(s):  
Ricardo López Antón ◽  
Juan A. González ◽  
Juan P. Andrés ◽  
Andrei V. Svalov ◽  
Galina V. Kurlyandskaya
Keyword(s):  
Magnetic Properties ◽  
Temperature Dependence ◽  
Layered Structure ◽  
Magnetic Measurements ◽  
Hysteresis Loops ◽  
Multilayered Structures ◽  
X Ray ◽  
Structural And Magnetic Properties

The influence of the thickness of the Ni0.8Fe0.2 (Permalloy, Py) layers on the structural and magnetic properties of magnetron sputtered Py/Ti multilayers was studied. The thickness of the Py layers was varied in the interval of 8 to 30 Å. X-ray reflectivity scans evidence the existence of a well-defined layered structure in all the samples considered, but also the presence of a complex intermixed interface. The shape of both the temperature dependence of magnetization and the hysteresis loops of the multilayered structures depends strongly on Py thickness. Magnetic and reflectivity measurements were comparatively analyzed in order to better understand the structure of the samples, and specifically, their interfaces. In particular, the presence of small superparamagnetic Py at the interfaces of the samples, especially evident in the samples with the thinnest Py layers, seems confirmed by the magnetic measurements, agreeing well with the reflectivity results.

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