Relationship between the shape of X-ray diffraction patterns and magnetic properties of bulk amorphous alloys Fe65Nb5Y5+xHf5-xB20 (where: x = 0, 1,2, 3, 4, 5)

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.

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Ferromagnetic Order in the Intermetallic Alloys laNi5-xMgx

ASEAN Journal on Science and Technology for Development ◽

10.29037/ajstd.49 ◽

2012 ◽

Vol 29 (1) ◽

pp. 50

Author(s):

D.N Ba ◽

L.T Tai ◽

N.T Trung ◽

N.T Huy

Keyword(s):

Magnetic Properties ◽

Curie Temperature ◽

Room Temperature ◽

Single Phase ◽

Chemical Doping ◽

Intermetallic Alloys ◽

X Ray Diffraction ◽

X Ray ◽

Ferromagnetic Order ◽

Diffraction Patterns

The influences of the substitution of Ni with Mg on crystallographic and magnetic properties of the intermetallic alloys LaNi5-xMgx (x ≤ 0.4) were investigated. The X-ray diffraction patterns showed that all samples were of single phase, and the lattice parameters, a and c, decreased slightly upon chemical doping. LaNi5 is well known as an exchange-enhanced Pauli paramagnet. Interestingly, in LaNi5-xMgx, the ferromagnetic order existed even with a small amount of dopants; the Curie temperature reached the value of room temperature for x = 0.2, and enhanced with increasing x.

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EFFECT OF PYRIDINE INTERCALATION ON SEMICONDUCTOR CRYSTALLINE MnPS3 MATERIALS PHASE TRANSFORMATION

International Journal of Nanoscience ◽

10.1142/s0219581x10006612 ◽

2010 ◽

Vol 09 (03) ◽

pp. 215-223 ◽

Cited By ~ 1

Author(s):

A. A. EL-MELIGI ◽

A. M. AL-SAIE ◽

H. AL-BUFLASA ◽

M. BOUOUDINA

Keyword(s):

Magnetic Properties ◽

Phase Transformation ◽

Crystallite Size ◽

Inorganic Compounds ◽

Semiconductor Material ◽

X Ray Diffraction ◽

X Ray ◽

Crystalline Semiconductor ◽

Diffraction Patterns ◽

Three Phases

The crystalline semiconductor material (MnPS3) has interlayer d-spacing gap of 6.4 Å. The main advantage of this gap is the ability to accommodate organic and inorganic compounds. Pyridine was intercalated in the MnPS3 interlayer gap under specific conditions. Four phases (d-spacing = 12.48 Å, 10.8 Å, 9.7 Å and 7.3 Å) were observed and the corresponding lattice expansions were determined, 5.8 Å, 4.4 Å, 3.3 Å and 1 Å, respectively. X-ray diffraction patterns of the samples after the experiment were stopped to reveal the presence of three phases together. The phase transformation occurred for the aforementioned phases. The crystallite size of certain phases is within nanorange. The magnetic properties of the materials are affected by the phase transformation. Complete intercalation was confirmed by the XRD and infrared (IR) measurements.

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Influence of the Quenching Rate on the Structure and Magnetic Properties of the Fe-Based Amorphous Alloy

Archives of Metallurgy and Materials ◽

10.1515/amm-2016-0079 ◽

2016 ◽

Vol 61 (1) ◽

pp. 439-444 ◽

Cited By ~ 6

Author(s):

M. Nabiałek

Keyword(s):

Magnetic Properties ◽

Amorphous Alloy ◽

Magnetic Measurements ◽

Mössbauer Spectrometry ◽

X Ray Diffraction ◽

Quenching Rate ◽

X Ray ◽

Transmission Electron ◽

Mossbauer Spectrometry ◽

Diffraction Patterns

This paper presents the results of investigations into the structure, microstructure and magnetic properties of Fe61Co10Y8W1B20 amorphous alloy. The alloy samples were in two physical forms: (1) plates of approximate thickness 0.5 mm (so-called bulk amorphous alloys) and (2) a ribbon of approximate thickness 35 μm (so-called classic amorphous alloy). The investigations comprised: X-ray diffractometry, Mössbauer spectrometry, transmission electron microscopy, and selected magnetic measurements; all of the investigations were carried out on samples in the as-quenched state. Analysis of the obtained SEM and TEM images, X-ray diffraction patterns, Mössbauer spectrometry results and measurements of the magnetisation in a high magnetic field facilitated collectively the detailed description of the structure of the investigated alloy, which was found to depend on the quenching speed.

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Microstructure and magnetic properties of NdFeB/Mo multilayered films prepared by magnetron sputtering

Modern Physics Letters B ◽

10.1142/s0217984916501268 ◽

2016 ◽

Vol 30 (08) ◽

pp. 1650126

Author(s):

Yudong Fu ◽

Feng Yan ◽

Xiaoshuo Zhu ◽

Xiaoxue Feng ◽

Zaizai Guo

Keyword(s):

Magnetic Properties ◽

Magnetron Sputtering ◽

Cross Section ◽

Multilayer Structure ◽

Remanent Magnetization ◽

X Ray Diffraction ◽

Multilayered Films ◽

X Ray ◽

Diffraction Patterns ◽

Microstructure And Magnetic Properties

The paper was presented to study the microstructure and magnetic properties of Mo/[NdFeB/Mo] × 10/Mo multilayered films prepared by magnetron sputtering on Si(100) substrate. The SEM observation of microstructure showed that the specimen had fine multilayer structure and the NdFeB layers were successfully separated by Mo layers on the cross-section. The interface between the NdFeB and Mo layer disappeared after annealing. X-ray diffraction patterns of the annealed films revealed that there are a large amount of Nd2Fe[Formula: see text]B phases. The thickness of Mo layer had obvious effects on magnetic properties of the samples. When it reached 21 nm, the number and the intensity of NdFeB phase increase, and the remanent magnetization ratio Mr/Ms suddenly rise. The influences of annealing on surface morphology and microstructure of NdFeB thin films were also studied.

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Structural and magnetic variations in Ba0.5Sr0.5Fe9Ce1Al2O19 hexaferrites at different sintering temperatures

Physica Scripta ◽

10.1088/1402-4896/ac3d4f ◽

2021 ◽

Author(s):

A.R. Makhdoom ◽

Qasim Ali Ranjha ◽

Ubaid-ur-Rehman Ghori ◽

Muhammad Ahsan Raza ◽

Binish Raza ◽

...

Keyword(s):

Magnetic Properties ◽

Recording Media ◽

Secondary Phases ◽

X Ray Diffraction ◽

Structural Variations ◽

X Ray ◽

Pure Phase ◽

Different Temperatures ◽

Diffraction Patterns ◽

Increasing Temperature

Abstract M-type hexaferrites has attracted researchers due to their ordinary magnetic properties and utilization as media for magnetic recording and microwave devices. In this study we have synthesized Ba0.5Sr0.5Fe9Ce1Al2O19 via conventional ceramic route. The synthesized material is treated against different temperatures and investigated structurally and magnetically by using several techniques such as X-ray diffraction, Scanning electron microscopy, and VSM respectively. Morphology of samples confirms the absence of secondary phases and uniform distribution of particles. X-ray diffraction patterns confirms the formation of pure phase of Hexaferrites. Microstructural analyses show the decrease in porosity and dislocations among sintered samples. Magnetic properties for the samples show a decrease in Ms and Mr with increasing temperature from 1225 °C to 1310 °C, while coercivity shows an increase with increasing temperature and maximum coercivity is observed at 1290 °C. The trends and occurrences can be well-linked to the structural variations and sintering effects. The results suggest that material can be used in various magnetic applications such as Recording media, and memory devices.

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Magnetic Properties of Nd3Fe27.7-xNixTi1.3 Compounds

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.271.112 ◽

2018 ◽

Vol 271 ◽

pp. 112-118

Author(s):

Jun Ning ◽

Gerile Mandahu ◽

Kai Li ◽

Hasi Chaolu ◽

Ojin Tegus ◽

...

Keyword(s):

Magnetic Properties ◽

Anisotropy Constant ◽

Magnetization Measurement ◽

Spin Reorientation ◽

X Ray Diffraction ◽

X Ray ◽

Arc Melting ◽

Ni Content ◽

Diffraction Patterns ◽

Magnetically Aligned

The structure and magnetic properties of the Nd3Fe27.7-xNixTi1.3compounds prepared by arc-melting method have been investigated by means of X-ray diffraction and magnetization measurement. It was found that all the compounds crystallized in Nd3(Fe, Ti)29-type structure with monoclinic symmetry and A2/m space group in concentration range 0.2 ≤x≤ 1.2. The unit cell volume decreased slightly with increasing Ni content. The X-ray diffraction patterns of the magnetically aligned samples showed that all compounds investigated had planar anisotropy. The Spin reorientation phenomena occurred in all the compounds. As the increase of Ni content, the Curie temperature TCmonotonously increased, but the spin reorientation temperature Tsrdid not obviously change. The saturation magnetization Ms of the compounds decreased monotonously with increasing Ni content at 5 K, 105 K, 205 K, and 305 K. The anisotropy fields Baat 5 K, 305 K and anisotropy constant K2at 305K appeared as a minimum, but the anisotropy constant K1at 305 K appeared as a maximum onx= 0.6.

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New Magnetic Metallic Glasses with Reduced Metalloid Content

MRS Proceedings ◽

10.1557/proc-8-217 ◽

1981 ◽

Vol 8 ◽

Author(s):

R. C. O'handley ◽

N. J. Grant

Keyword(s):

Amorphous Alloys ◽

X Ray Diffraction ◽

X Ray ◽

Early Transition Metal ◽

New Class ◽

Class 1 ◽

Diffraction Patterns ◽

Late Transition ◽

The Stability ◽

Early Transition

ABSTRACTSeveral new magnetic amorphous alloys containing early transition metals (TE) and having reduced metalloid (M) content have been melt spun. Some properties of three examples of this new class, 1) Co80Nb14B6, 2) Co84Nb10B6, and 3) Fe81Nb5B14, are presented. The dominant late transition meta1 (TL) content assures an appreciable magnetic moment while the presence of an early transition metal significantly enhances the stability against crystallization. Crystallization temperatures are 1) 742K, 2) 698K, and 3) 762K for the three alloys, respectively. X-ray diffraction patterns show the materials to be amorphous and to exhibit a large-r correlation length (approximately 2.0 A) that is shorter than is typiclly observed in TL80M20 glasses containing more than one transition meta) species (approximately 2.3 − 2.5A). The coercivities of the glassy compositions range from 30 to 70 m0e.

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Structure and Magnetic Properties of Spark Plasma Sintered NdFeB

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1112.27 ◽

2015 ◽

Vol 1112 ◽

pp. 27-31

Author(s):

Toto Sudiro ◽

Didik Aryanto ◽

Nenen Rusnaeni Djauhari ◽

Citra Wara Br Sinuraya ◽

Syahrul Humaidi ◽

...

Keyword(s):

Magnetic Properties ◽

Carbon Paper ◽

X Ray Diffraction ◽

X Ray ◽

Energy Product ◽

Plasma Sintering ◽

Different Temperatures ◽

Spark Plasma ◽

Effects Of Temperature ◽

Diffraction Patterns

A spark plasma sintering technique was used to consolidate NdFeB compacts at four different temperatures as 750°C, 850°C, 950°C and 1030°C. The surface of specimens was polished to remove the carbon paper on the surface of NdFeB compacts by using SiC paper for up to #1500 in grit. The polished NdFeB compacts were then magnetized by using impulse magnetizer K-series. In this study, the effects of temperature on the structure and magnetic properties of NdFeB magnet were studied. The results show that depending on the fabrication temperature, the X-ray diffraction patterns of NdFeB compacts are distinct. This suggests that the structure of NdFeB compacts is changed with increase in fabrication temperature. Meanwhile, the remanance Br and energy product BH(max) of NdFeB magnets tend to decrease as fabrication temperature increase.

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

Revista de Chimie ◽

10.37358/rc.19.1.6889 ◽

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.

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