alloy powder fept
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Surface patterns of tetragonal phase FePt thin films from ...The patterns of [email protected] 2 O 3 core-shell nanoparticles were converted into face-centered tetragonal phase FePt alloy at enhanced temperatures in the presence of 5% hydrogen. Scanning electron microscopy (SEM), atomic force microscopy (AFM), powder X-ray diffraction (PXRD) and superconducting quantum interference device (SQUID) magnetometer were ...
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Magnetism of FePt Surface Alloys - Max Planck SocietyFePt SAs are grown on Pt(997) substrates with a highly regular step periodicity of 2 nm [9]. FePt alloy layers confined to the topmost layer of the Pt(997) surface form during molecular-beam epitaxy (MBE) deposition of sub-monolayer coverages of Fe at temperatures of 500 to 550 K. The substrate and alloy preparation and structural
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Exchange coupled L10-FePt/fcc-FePt nanomagnets: Synthesis ...Abstract We report synthesis, characterization and magnetic properties of exchange-coupled L1 0-FePt/fcc-FePt nanomagnets.Structural and morphological characterization of exchange-coupled L1 0-FePt/fcc-FePt was carried out by powder X-ray diffraction, Möss spectroscopy and transmission electron microscopy.Rietveld refinement of powder X-ray diffraction pattern has been used to quantify ...
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WET CHEMICAL SYNTHESIS STRATEGIES TO DEVELOP .which is exhibited by a class of transition metal alloy systems such as FePt, CoPt, FePd, MnPt, etc. This phase in the AlMn binary system is labeled as the τ phase and has a large anisotropy value of approximately 10. 7. ergs/cc which translates to good magnetic properties suitable for use in magnetic tape. The advantages of producing AlMn
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Patents Assigned to Tanaka Kikinzoku Kogyo K.K. - Justia ...Jul 14, 2014 · Abstract: A process for producing an FePt-based sputtering target includes adding metal oxide powder containing unavoidable impurities to FePt-based alloy powder containing Pt in an amount of 40 at % or more and less than 60 at % and one or more kinds of metal elements other than Fe and Pt in an amount of more than 0 at % and 20 at % or less ...
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Company Profile - Powder Alloy CorporationCompany Profile. Powder Alloy Corporation (PAC) is a privately held firm that was founded in 1973. Our core business is the manufacturing and distribution of metallic, ceramic and thermal spray powders and wires that are used in coating enhancement and joining industries.
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Magnon and magnetic structure of FePt alloyAbstract To determine the exchange coupling constants between spins, magnon dispersion relation in FePt alloy was studied by neutron inelastic scattering measurements. Data analysis based on the localized spin model led to the result that magnetic moments of .
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Research Article X-Ray Spectral Investigation of Carbon ...X-Ray Spectral Investigation of Carbon Nanocapsule and ... (USXES) was used to investigate the electronic structures of FePt alloy included carbon nanocapsules ([email protected]) and graphite nanosheets (GNSs). ese materials were synthesized by electric plasma discharge in ... carbon powder containing a mixture of [email protected], GNSs,
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(PDF) Oxidation of FePt nanoparticles | Mihaela Tanase ...These shifted presence of oxygen. The XRD scan reveals a two- peaks can be ascribed to the Fe1 x Pt3þx alloy with phase mixture of Fe3O4 and an FePt ordered alloy. 0oxo1; which consists of less Fe atoms in solid It is clear that the alloy is ordered because of the solution than FePt3.
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Magnon and magnetic structure of FePt alloy - ScienceDirectAn FePt alloy single crystal was grown by Bridgman method. To promote the chemical order, the single crystal was annealed at 920 ∘ C for a day, then temperature was gradually lowered toward 300 ∘ C .
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Structurally Ordered FePt Nanoparticles and Their Enhanced ...We report the structure-controlled synthesis of FePt/MgO NPs and their catalysis for oxygen reduction reaction (ORR) in 0.5 M H2SO4 solution. The synthesis yields fcc-FePt/MgO and fct-FePt/MgO NPs with the MgO coating being readily removed for catalytic studies. The fct-FePt NPs show higher activity and durability than the fcc-FePt in the ORR condition.
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X-Ray Spectral Investigation of Carbon Nanocapsule and ...Ultrasoft X-ray emission spectroscopy (USXES) was used to investigate the electronic structures of FePt alloy included carbon nanocapsules ([email protected]) and graphite nanosheets (GNSs). These materials were synthesized by electric plasma discharge in an ultrasonic cavitation field of liquid ethanol. Scanning and transmission electron microscopies were used to study the spatial structures and ...
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LQ/ )H3WDQG FePt-based nanocomposite magnets H ...0 FePt and Fe 3Pt would be needed. In the present work, we investigate the effectof such structural features on the magnetic properties of nanocomposite FePt/Fe 3Pt powders. Also we compare results on the MCA of L1 0 FePt, experimentally determined for Fe 50Pt 50 powder, with those obtained by electronic structure calculations. 2.
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The Progress of Chinese SmFeN PowderSome Introduction of FePt Permanent Magnet Material September 16, 2019 FePt alloy has long been known as a very good kind of permanent magnet material, and FePt bulk has not applied well due to the expensive cost price, in the ...
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WO2013105647A1 - FePt SPUTTERING TARGET AND METHOD .The FePt alloy powder is preferably be produced by an atomization method in terms of reducing the contamination of impurities, the atomization method is preferably carried out using argon gas or...
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Direct synthesis of L10 FePt nanoparticles within carbon ...Direct synthesis of L10 FePt nanoparticles within carbon nanotubes by wet chemical procedure A Capobianchi, S Laureti, D Fiorani, S Foglia, E Palange To cite this version: A Capobianchi, S Laureti, D Fiorani, S Foglia, E Palange. Direct synthesis of L10 FePt nanoparticles within carbon nanotubes by wet chemical procedure.
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LQ/ )H3WDQG FePt-based nanocomposite magnets H ...0 FePt and Fe 3Pt would be needed. In the present work, we investigate the effectof such structural features on the magnetic properties of nanocomposite FePt/Fe 3Pt powders. Also we compare results on the MCA of L1 0 FePt, experimentally determined for Fe 50Pt 50 powder, with those obtained by electronic structure calculations. 2.
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About Isotropic NdFeB Powder - SDM Magnetics Co., Ltd.Some Introduction of FePt Permanent Magnet Material September 16, 2019 FePt alloy has long been known as a very good kind of permanent magnet material, and FePt bulk has not applied well due to the expensive cost price, in the ...
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Journal of Ma terials Chemistry C
FePt NPs as powder was also carried out to further verify the 20 composition of each sample. The EDX results are tabulated in Table 1, which manifest that the ratio of Fe and Pt is ... 30 FePt alloy NPs exhibit well-faceted spherical morphology. Insets of Fig.2 are the high-resolution TEM images of a single FePt .
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Common Uses for Powdered Metals - Belmont MetalsIf you are debating the best form or metal to use for your manufacturing business, you may be surprised to learn that powdered metals have just as many uses as their metal alloy counterparts. In fact, adding a powdered metal to your master alloy can increase certain desirable properties and decrease certain undesirable properties. Our...
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New Approach to Fully Ordered fct-FePt Nanoparticles for ...New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid ... the FePt alloy NPs prepared for ORR studies often have a solid solution structure in which Fe and Pt ... patterns of the FePt NP powder were collected to characterize
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Magnetic anisotropy of FePt nanoparticlesThe chemically ordered FePt L1. 0. structure can be obtained by annealing from the structure fcc of FePt alloy or by deposition on substrate above the L1. 0. ordering temperature. 15, 16. At high temperature an fcc solid solution of Fe-Pt is observed in the A1 phase; below 1573K (and down
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Title Well-ordered L1(0)-FePt nanoparticles synthesized by ...0-FePt nanoparticles prepared by this method showed a smooth hysteresis loop with no kink, and the room temperature coercivity reaches an extremely large value of 28 kOe, even though the particle size is 6.7 nm in diameter. The Möss hyperfine parameters of the nanoparticles are very close to those of the bulk L1 0-FePt alloy,
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FePt—C-based sputtering target and process for producing ...Oct 14, 2014 · An FePt—C-based sputtering target contains Fe, Pt, and C and has a structure in which an FePt-based alloy phase and a C phase containing unavoidable impurities are mutually dispersed, the FePt-based alloy phase containing Pt in an amount of 40 at % or more and 60 at % or less with the balance being Fe and unavoidable impurities.
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FePt Alloy Nanoparticles for Biosensing: Enhancement of ...The FePt alloy NPs are superior catalysts than Pt NPs for vitamin C electro-oxidation, with a linear concentration range of 0.01–1 mM, a high sensitivity of 4.347 mA cm –2 mM –1, and a low detection limit of 0.1 μM (S/N = 3). By effectively reducing the overpotential for the electro-oxidation, these alloy NPs are significantly more selective to the detection of vitamin C against other common interference .
- Published in: Analytical Chemistry · 2013Authors: Nafiseh Moghimi · K T Leung[PDF] Get price
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Surface Segregation of Fe in Pt–Fe Alloy Nanoparticles ...Oct 01, 2015 · The powder was then dried in an air oven at 80 °C overnight, and subsequently homogenized in a glass mortar by grinding. The as-synthesized Pt–Fe alloy nanoparticles were prepared by ultrasonically dispersing 500 mg samples of the Pt/C precursor powder (prepared with methods discussed above) in water (120 mL) in a 250 mL beaker for 1.5 h.
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Monodisperse FePt Nanoparticles and Ferromagnetic FePt ...Mar 17, 2000 · Synthesis of monodisperse iron-platinum (FePt) nanoparticles by reduction of platinum acetylacetonate and decomposition of iron pentacarbonyl in the presence of oleic acid and oleyl amine stabilizers is reported. The FePt particle composition is readily controlled, and the size is tunable from 3- to 10-nanometer diameter with a standard deviation of less than 5%.
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Journal of Materials Chemistry C.hk0 phase) FePt alloy nanoparticles (NPs) with extre mely high magnetocrystalline anisotropy are considered to be very promising candidates for the next g eneration of ultrahigh-density data storage systems. The question of how to generate L1 0 FePt NPs with high coercivity, controllable size, and a narrow size distribution is a challenge.
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Characterization of FePt Nanopowder Synthesized by a ...FePt binary alloy nanopowder has been synthesized by a chemical vapor condensation process using a mixture of iron acetylacetonate and platinum acetylacetonate. Particle size of the synthesized powder was less than 10 nm and the powder had very narrow size distribution with relatively high dispersivity. FePt nanopowder possessing L10 ordered phase was synthesized at the condition of well ...
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1. Introductionwi
Aqua regia was prepared by mixing one volume of concentrated nitric acid and three volumes of concentrated hydrochloric acid and was used for etching as-synthesized carbon powder samples to remove exposed FePt alloy particles. Fe wire (Ø3, 99.9%) and Pt wire (Ø2, 99.98%) were used to prepare the 50 at. % Fe and 50 at.
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