sound waves and magnetic waves
Tài liệu Báo cáo " The effect of cobalt substitution on structure and magnetic properties of nickel ferrite " pptx
... nanoparticles, Journal of Magnetism and Magnetic Materials, Vol 320 (2008) 857 [6] R.M More, T.J Shinde, N.D Choudhari, P.N Vasambekar, Effect of temperature on X-ray, IR and magnetic properties of nickel ... the relation and is shown in table with K = HCMS Magnetic structure of ferrite Ni1-xCoxFe2O4 is decribed following [8]: Fe3+ [ Ni2+1-x tetrahedral Co2+x Fe3+ ] O2-4 octahedral The magnetic moment ... K.Chandra, Preparation and characterization of nanosize nickel-substituted cobalt ferrites (Co1-xNixFe2O4), Journal of Solid State Chemistry, Vol 178 (2008) 3183 [3] Z.P Niu, Y Wang, F.S Li, Magnetic...
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Physics of magnetism and magnetic materials k buschow, f de boer
... H J Buschow (Ed.) Handbook of magnetic materials, Amsterdam: North Holland Publ Co., Vol 6, p 181 Brooks, M S S and Johansson, B (1993) in K H J Buschow (Eds) Handbook of magnetic materials, ... HEISENBERG EXCHANGE INTERACTION AND THE WEISS FIELD 21 ferromagnetic 3d elements like Ni, Co, and Fe (parallel moment arrangements) from the antiferromagnetic elements Mn and Cr (antiparallel moment ... on the magnetic behavior of a ferromagnetic material above In this case, the magnetic moments are no longer ferromagnetically ordered and the system is paramagnetic Therefore, we may use again...
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synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods
... [16] Amorphous Fe2O3 is paramagnetic at temperatures above T N ¼ 80 K with a magnetic moment of 2:5mB per atom of iron [17] The a-Fe2O3 phase is antiferromagnetic (paramagnetic) at temperatures ... arrangement and development of weak ferromagnetism occurs between 260 and 950 K [16] bFe2O3 exhibits paramagnetic behavior at temperatures above 119 K [16] The thermal instability of ferrimagnetic ... temperature and vanishes at 1000 K Among all iron oxides, Fe3O4 and g-Fe2O3 exhibit the largest saturation magnetization of 84 and 74 Am2/kg, respectively The slightly decreasing feature between 800 and...
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Báo cáo khoa học: H NMR study of the molecular structure and magnetic properties of the active site for the cyanomet complex of O2-avid hemoglobin from the trematode Paramphistomum epiclitum pdf
... [16] and as conrmed herein by solution 1H NMR of Pe metMbCN Proximal and distal residues are shown as rectangles and circles, respectively, and arrows connecting heme substituents and residues, and ... Hemoglobin and Myoglobin and Their Reactions with Ligands Elsevier, North-Holland Publishing, Amsterdam, the Netherlands Dickerson, R.E & Geis, I (1983) Hemoglobin: Structure, Function, Evolution and ... points) at 25 C, 30 C and 35 C in order to identify scalar and dipolar connectivities among heme and amino acid residues Spectral widths of 13 kHz and mixing times of 80 ms for NOESY and 50 ms for TOCSY...
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Electric and Magnetic Fields FACTS pot
... electric or magnetic field oscillates, or cycles backward and forward every second, and is measured in hertz The earth’s electric and magnetic fields not oscillate They are called static fields and have ... Electromagnetic Power frequency waveform electric and magnetic fields occur through human activity wherever electricity is generated, transmitted and used The Difference Between Electric and Magnetic ... before magnetic fields can be produced For example, turning on an electric appliance causes magnetic fields to surround the cord and appliance Magnetic fields are strongest closest to the source, and...
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Anisotropic Magnetoresistance and Magnetic Anisotropy in High-quality (Ga,Mn)As Films
... of the magnetic properties of this system, including TC [1], the magnetic anisotropy [2,3], and the magneto-optical response [4] There is consequently a strong interplay between magnetic and transport ... Magnetoresistance effect and related phenomena in magnetic metal films have found widespread applications in magnetic sensing and recording technologies Magnetoresistive devices based on III-V magnetic semiconductors ... carriers and magnetic ions, the resistivity depends on the angle between the sample magnetisation and the applied current This is a well-known effect in ferromagnetic materials Applying a small magnetic...
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Báo cáo toán học: " Structural, optical and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles" docx
... Synthesis and optical and magnetic properties of diluted magnetic semiconductor Zn1-xMnxO hollow spherical structures J Phys Chem C 2009, 113:1812-1817 Figure Macrographs (a), XRD (b), and FTIR ... Mn-doped ZnO diluted magnetic semiconductors [DMSs] by Dietl et al [8] DMSs are materials that simultaneously exhibit ferromagnetic and semiconducting properties In DMS materials, magnetic transition ... temperature [TC] and saturation magnetic moments [MS] is required However, until now, the mechanism involved in ferromagnetism [FM] is complicated and the reproducibility of ferromagnetic behavior...
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Báo cáo hóa học: " Synthesis and magnetic properties of Zr doped ZnO Nanoparticles" docx
... measurements and data analysis, and drafted the manuscript DG and DX made the conception and design of the manuscript ZZ2 carried out the XPS measurements and data analysis JLZ and ZZ1 participated ... measurements and data analysis GY and ZS participated in the data analysis and the interpretation of the results All authors have been involved in revising the manuscript, read and approved the ... there is not any contamination of ferromagnetic cluster formation and the observed FM is the instinct property of Zn1-xZrxO NPs, the zero-field-cooled (ZFC) and field-cooled (FC) magnetization curves...
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Báo cáo hóa học: "Investigation of electrical and magnetic properties of ferro-nanofluid on transformers" pptx
... Fe O nanofluid measured by a VSM Results and discussion Different magnetic cores, air, and Fe3O4 nanofluids of 0.25, 0.5, 0.75, and M were applied as the magnetic core of transformers The inductance ... was 0.45 mm, and the thickness of the enamel layer was approximately 0.05 mm The primary and secondary windings had 20 turns The outer and inner diameters of the capillary were 3.2 and 2.3 mm, ... permeability, permittivity, and magnetic tangent loss and setting exciting sources, the impedances will be calculated by the finite element method Both the frequencies of measurement and simulation range...
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Báo cáo hóa học: "Fabrication and magnetic properties of granular Co/porous InP nanocomposite materials" ppt
... Cu and dendrimer matrix [22,36] Figure shows magnetic hysteresis loops of Co/InP composite structure with the deposition time of for both perpendicular and parallel orientations, where H// and ... 19 20 21 22 23 24 25 26 Zeng H, Skomski R, Menon L, Liu Y, Bandyopadhyay S, Sellmyer DJ: Structure and magnetic properties of ferromagnetic nanowires in selfassembled arrays Phys Rev B 2002, ... of an array of nickel nanotubules and its magnetic behavior Adv Mater 2001, 13:1631-1633 Li DD, Thompson RS, Bergmann G, Lu JG: Template-based synthesis and magnetic properties of cobalt nanotube...
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Báo cáo hóa học: " Wet chemical synthesis and magnetic properties of single crystal Co nanochains with surface amorphous passivation Co layers" pdf
... of 355.8 and 93.6 Oe, respectively, for NCs and PSC, saturation magnetizations (Ms) of 125.7 and 162.5 emu/g, respectively, for NCs and PSC, and remnant magnetization (M r ) up to 46.6, and 4.5 ... as-synthesized NCs, and both TEM images of the (b) nonaligned and (c) aligned nanoparticles, respectively, obtained from without external magnetic field and with weak external magnetic field (approx ... of published SY and YQ: partly carried out the TEM and HRTEM experiments, as well as drafted the manuscript XL, LS, and HL: conceived of the study, and participated in its design and coordination...
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Báo cáo hóa học: " Electronic and magnetic properties of SnO2/CrO2 thin superlattices" doc
... Figure The supercell model and total energies for the systems (a) Supercell used to study the (SnO2)1(CrO2)1 SL, and (b) Total energies for the non -magnetic (NM) and anti-ferromagnetic (AFM) states ... states (in black) and project density of states (in gray) for the Cr–3d (b) Total energies for the non magnetic (NM) and anti-ferromagnetic (AFM) states relative to the ferromagnetic (FM) state ... carriers Abbreviations AFM: anti-ferromagnetic; FM: ferromagnetic; GGA-PBE: generalized gradient approximation and the Perdew, Burke, and Ernzerhof; NM: non -magnetic; PDOS: projected density of...
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Báo cáo sinh học: " Research Article Development of the Database for Environmental Sound Research and Application " pot
... downloading and managing the sounds 8.3 Adding/Editing Sound Data As mentioned, admin and associates will be able to freely upload sounds, edit all sound data, and create keywords Users will submit sounds ... examples are freesound.org and soundsnap.com These are both collections of sounds donated by members, who are largely sound enthusiasts, both amateur and professional, which means the sounds are usually ... relevance, and most recent, or the most popular Related sounds can be organized into packs and downloaded as a group People who are browsing the sounds can add tags and comments Finally, and most...
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Báo cáo hóa học: " Synthesis and Magnetic Properties of Maghemite (c-Fe2O3) Short-Nanotubes" ppt
... put in a diamagnetic plastic straw and impacted into a minimal volume for magnetic measurements Background 1475 magnetic measurements were checked for the packing material Results and Discussion ... and desorption curves of starting materials and as-prepared c-Fe2O3 SNTs at 77 K Fig Magnetic hysteresis loops at T = 300 K and the enlarged partial hysteresis curves for starting materials and ... c), and HRTEM (d, e, the scale bar is 10 nm) images of as-prepared c-Fe2O3 SNTs incorporated sulfate ions in the preparing process, corresponding to the one band of the v1 mode and two bands...
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Báo cáo hóa học: " Aqueous Solution Preparation, Structure, and Magnetic Properties of Nano-Granular ZnxFe32xO4 Ferrite Films" potx
... ions and both the O and the ions in A sites and not contain the vibration of the ions in B sites at all [23, 24] Figure shows the Raman spectra measured at 293 K for the Fe3O4, Zn0.41Fe2.59O4, and ... was fitted by two peaks at 648 and 679 cm-1 In fact, the Raman modes at 653 and 648 cm-1 are ascribed to the oxygen breathing vibrations against zinc; and the 681 and Fig The top view SEM micrographs ... the magnetic moments of the A sites are antiparallel to those of the B sites, so the net magnetic moment of the ZnxFe3-xO4 spinel unite cell is the difference in the magnetic moment between B and...
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báo cáo hóa học:" Structural, optical and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles" docx
... Synthesis and optical and magnetic properties of diluted magnetic semiconductor Zn1-xMnxO hollow spherical structures J Phys Chem C 2009, 113:1812-1817 Figure Macrographs (a), XRD (b), and FTIR ... Mn-doped ZnO diluted magnetic semiconductors [DMSs] by Dietl et al [8] DMSs are materials that simultaneously exhibit ferromagnetic and semiconducting properties In DMS materials, magnetic transition ... temperature [TC] and saturation magnetic moments [MS] is required However, until now, the mechanism involved in ferromagnetism [FM] is complicated and the reproducibility of ferromagnetic behavior...
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báo cáo hóa học:" Synthesis and Magnetic Properties of Nearly Monodisperse CoFe2O4 Nanoparticles Through a Simple " docx
... effect [22] and the presence of a magnetic dead or antiferromagnetic layer on the surface [13, 23], which is caused by finite-size effect of the small magnetic nanoparticles Additionally, the magnetic ... superparamagnetic behavior and narrow size distribution imply that the sample prepared in this work is a good candidate for the possible biomedical applications Fig Zero-field-cooled (ZFC) and field-cooled ... mmol) of FeCl3Á6H2O and 0.7 g of (3 mmol) CoCl2Á6H2O were dissolved in the solvent composed of 80 ml of water and 40 ml of ethanol After that, 7.3 g (24 mmol) of sodium oleate and ml of oleic amine...
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Báo cáo hóa học: " Facile Fabrication of Ultrafine Hollow Silica and Magnetic Hollow Silica Nanoparticles by a Dual-Templating Approach" pdf
... filled in a diamagnetic plastic capsule, and then the packed sample was put in a diamagnetic plastic straw and impacted into a minimal volume for magnetic measurements Background magnetic measurements ... and S4 is 0.61 and 0.83 cm3/g, respectively (between 1.7 and 300 nm width) Moreover, The BJH desorption cumulative pore volume of S3 and S4 is 0.66 and 0.81 cm3/g, respectively (between 1.7 and ... of an external magnetic field and enhance the wear and corrosion resistance of the magnetic NPs [12] From this viewpoint, composite structures based upon nanometersized iron oxide and silica also...
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