Al Effect on the Structure of the Spray Formed Fe88Si12 (at%) Alloy

2008 ◽  
Vol 570 ◽  
pp. 150-154 ◽  
Author(s):  
F. Saporiti ◽  
A.H. Kasama ◽  
B. Arcondo ◽  
Walter José Botta Filho ◽  
Claudio Shyinti Kiminami ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperatures ◽  
Spray Forming ◽  
Order Reaction ◽  
Soft Magnetic Properties ◽  
Thin Sheets ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Silicon Alloys ◽  
X Ray

Fe-Si alloys have excellent soft magnetic properties, specially around 12 at% Si. However, its industrial application is limited because of the lack of ductility, which causes cracking during rolling operations for the fabrication of thin sheets. The reason of the brittleness of the high silicon alloys is a disorder/order reaction at low temperatures. The aim of this work is to analyze the effect of the addition of Aluminum on the crystalline structure of Fe-Si alloys. Samples with a chemical composition of Fe88Si12 and Fe87Si12Al1 (at%) were prepared by Spray Forming. The structure was studied by means of X-ray diffraction and Mössbauer Spectroscopy. The presence of the DO3 and α- Fe phases were observed

scholarly journals Structure and Magnetic Properties of Amorphous Fe-Zr-Nb-Cu-B-(Y) Ribons

2019 ◽  
Vol 70 (1) ◽  
pp. 233-235
Author(s):  
Joanna Gondro
Keyword(s):  
Magnetic Properties ◽  
Low Temperatures ◽  
Amorphous Alloys ◽  
Room Temperature ◽  
Time Stability ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray ◽  
Amorphous Ribbons ◽  
Structural And Magnetic Properties

In this paper the results of the structural and magnetic properties for amorphous alloys ribbons Fe86Zr7Nb1Cu1B5 and Fe86Zr4Y3Nb1Cu1B5 were presented. From X-ray diffraction and M�ssbauer investigations we have stated that amorphous ribbons were fully amorphous. The investigated alloys, exhibit poor soft magnetic properties at room temperature. However, at low temperatures they show relatively large magnetic susceptibility and good its time stability.

scholarly journals Thermal and soft magnetic properties of Co40Fe22Ta8B30 glassy particles: In-situ X-ray diffraction and magnetometry studies

2014 ◽  
Vol 116 (5) ◽  
pp. 054904 ◽  
Author(s):  
Amir Hossein Taghvaei ◽  
Mihai Stoica ◽  
Ivan Kaban ◽  
Jozef Bednarčik ◽  
Jürgen Eckert
Keyword(s):  
Magnetic Properties ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray

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.

Nanocrystallization of Fe-Based Amorphous Alloys Fe73.5Cu1Nb3Si13.5B9 by Yb-Doped Fiber Laser Overlapping Irradiation

2012 ◽  
Vol 482-484 ◽  
pp. 2365-2370 ◽  
Author(s):  
Qian Li Ma ◽  
Yong Bao ◽  
Guo Rui Zhang ◽  
Li Meng Yu ◽  
Ling Fei Ji ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Fiber Laser ◽  
Laser Irradiation ◽  
Soft Magnetic Property ◽  
Internal Diameter ◽  
Soft Magnetic Properties ◽  
External Diameter ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Transmission Electron

The paper presents a laser irradiation method for rapidly fabricating Fe-based nanocrystalline alloys using Yb-doped fiber laser with a wavelength of 1070nm by overlapping irradiation of the heated areas. The samples are annular cores rolled with 20μm-thick and 3.2mm-wide belts of amorphous alloy Fe73.5Cu1Nb3Si13.5B9, which have internal diameter of 14 mm and external diameter of 20 mm. Every side of the samples is irradiated for 15 min by fiber laser. X-ray diffraction and transmission electron microscopy (TEM) are used for microstructure analysis and observation. The samples irradiated by a defocus beam with a diameter of 7.1mm through a lens have better soft magnetic properties than directly by an original collimating beam with a diameter of 6.7mm. The dimension of homogeneous ultrafine grains is about 10nm with a bcc α-Fe (Si), which is the foundation of the excellent soft magnetic property. Uniform laser irradiation and the appropriate laser power are necessary for optimum microstructure and soft magnetic properties.

scholarly journals Structure and Soft Magnetic Properties of the Amorphous Alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1)

2016 ◽  
Vol 61 (1) ◽  
pp. 445-450
Author(s):  
K. Błoch
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Major Effect ◽  
Exothermic Peak ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Cast State ◽  
Soft Magnetic ◽  
Two Peaks ◽  
Thermal Stability Of

This paper presents studies relating to the structure, soft magnetic properties and thermal stability of the following bulk amorphous alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1). On the basis of the performed X-ray diffraction studies and Mössbauer spectroscopy, it was found that investigated samples were amorphous in the as-cast state. The DSC curve obtained for Fe61Co10Ti2Y7B20 alloy exhibited one exothermic peak, while for the Fe61Co10Ti3Y6B20 sample, two peaks were distinguishable. The change in the chemical structure of the investigated alloys has a major effect on their soft magnetic properties; especially on coercivity and saturation magnetization. On the basis of the magnetization curves analysis, the spin wave stiffness parameter Dsp were determined for the investigated alloys.

Excimer Laser Irradiation Effects on Soft Magnetic Properties of Sputtered Iron Nitride Thin Films

2008 ◽  
Vol 8 (8) ◽  
pp. 4092-4095 ◽  
Author(s):  
Ranu Dubey ◽  
Ajay Gupta ◽  
D. M. Phase ◽  
Ram Prakash
Keyword(s):  
Magnetic Properties ◽  
Energy Density ◽  
Laser Irradiation ◽  
Structural Relaxation ◽  
Iron Nitride ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Pulse Laser Irradiation ◽  
Optimum Energy

Effect of pulse laser irradiation on soft magnetic properties of reactively sputtered iron nitride thin film has been studied. The as-deposited films exhibit large coercivity in the range 54 Oe to 148 Oe. Laser irradiation results in remarkable decrease in the coercivity of the films, the minimum value achieved being 8 Oe. X-ray diffraction measurements evidence structural relaxation in the films, resulting in densification. Surface roughness of the films exhibits only a marginal increase after laser irradiation. The observed decrease in the coercivity may be attributed to the relaxation of some quenched-in stresses associated with structural relaxation in the films. Irradiation as a function of energy density of laser pulse shows that an optimum energy density is required to achieve the best soft magnetic properties, which can vary from sample to sample.

Highly Oriented Co Soft Magnetic Films on Si Substrates

1999 ◽  
Vol 562 ◽  
Author(s):  
Heng Gong ◽  
Wei Yang ◽  
Maithri Rao ◽  
David E. Laughlin ◽  
David N. Lambeth
Keyword(s):  
Magnetic Properties ◽  
Magnetic Films ◽  
Face Centered Cubic ◽  
X Ray Diffraction ◽  
Orientation Relationships ◽  
Soft Magnetic ◽  
X Ray ◽  
Si Substrates ◽  
The Face ◽  
Face Centered

ABSTRACTThin Co and Co based alloy films with the face centered cubic (FCC) structure have been epitaxially grown on single crystal Si wafers by sputter deposition. Epitaxial orientation relationships have been determined by x-ray diffraction, x-ray pole figure scans and TEM. Magnetic properties have been characterized using vibrating sampling magnetometer (VSM), torque magnetometer and BH loop tracer. Soft magnetic properties have been observed for the pure Co films.

scholarly journals Microstructure and Soft Magnetic Properties of Fe-Zr-(Pt)-Nb-Cu-B Amorphous Alloys

2017 ◽  
Vol 62 (2) ◽  
pp. 707-710
Author(s):  
J. Gondro ◽  
K. Błoch ◽  
M. Nabiałek ◽  
S. Walters
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Amorphous Alloys ◽  
Mössbauer Spectrometry ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
X Ray ◽  
Low Field ◽  
Magnetizing Field ◽  
Microstructure And Magnetic Properties

AbstractThis paper presents the results of investigations into the microstructure and magnetic properties of Fe86Zr7Nb1Cu1B5, Fe82Zr7Nb2Cu1B8and Fe81Pt5Zr7Nb1Cu1B5alloys. The alloys were investigated in their as-quenched state, in the form of thin ribbons with approximate dimensions as follows: width 3 mm and thickness 20 μm.The investigations were performed utilizing Mössbauer spectrometry and X-ray diffractometry. Also, an evaluation of the low-field magnetic susceptibility and measurements of the magnetization versus temperature and magnetizing field were performed.

Nanocrystallization of Fe-Based Amorphous Alloys Fe73.5Cu1Nb3Si13.5B9 by Continuous CO2 Laser Overlapping Irradiation

2011 ◽  
Vol 287-290 ◽  
pp. 2351-2355 ◽  
Author(s):  
Guo Rui Zhang ◽  
Yong Bao ◽  
Qian Li Ma ◽  
Li Meng Yu ◽  
Ling Fei Ji ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Proper Time ◽  
Amorphous State ◽  
Soft Magnetic Property ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray ◽  
Transmission Electron ◽  
Irradiation Power

Continuous CO2laser irradiation is exploited to realize nanocrystallization of Fe based amorphous alloys Fe73.5Cu1Nb3Si13.5B9by overlapping of the heated areas, and to get homogeneous ultrafine grains of about 10nm with a bcc α-Fe(Si) structure, which is the foundation of the excellent soft magnetic property. X-ray diffraction and transmission electron microscopy(TEM) are used for microstructure analysis and observation, and the results show that irradiation power of 71w~99w gives the heat shock to the transformation from the metastable amorphous state to crystallized state, and proper time of about 20~30 seconds is necessary for optimum microstructure and soft magnetic properties.

Engineering soft magnetic properties by doping ions in low-fired M-type hexaferrite with Bi–Co–Ti substitution

RSC Advances ◽  
2015 ◽  
Vol 5 (111) ◽  
pp. 91382-91388 ◽  
Author(s):  
Yang Bai ◽  
Wenjie Zhang ◽  
Lijie Qiao ◽  
Jiangli Cao
Keyword(s):  
Magnetic Properties ◽  
High Frequency ◽  
Low Temperatures ◽  
Soft Magnetic Properties ◽  
Frequency Range ◽  
Soft Magnetic ◽  
Very High Frequency ◽  
Co Doping ◽  
Ti Substitution ◽  
Very High

M-type hexaferrite with appropriate Co, Ti and Bi co-doping has excellent soft magnetic properties in a very high frequency range and can be sintered at low temperatures.

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