size of magnetic particles and magnetic properties

... further understand the origin of ferromagnetism of TMs in the ZnO nanowire, we also plot the density of states (DOS) of 3d levels of the FM and AFM states in Fig for the two Cr and two Co ions, ... Fe favor ferromagnetic states energetically, and Co and Ni prefer anti-ferromagnetic states, whereas the opposite is only true for the cases of Fe and Ni in the bulk Based on the band coupling ... formation energies and magnetic coupling properties of transition metals (Cr, Fe, and Ni) doped in the ZnO nanowire and bulk We find that the two nearest Cr atoms favor ferromagnetic state, which...

Ngày tải lên: 22/06/2014, 01:20

... extracellular environment of the brain The good temporal and chemical resolutions of such in vivo cyclic voltammetric experiments offer improved understanding of the chemistry of the brain These repetitive ... absorptivity of R and DO and CO are the diffusion coefficient and concentration of O, respectively Hence, A increases linearly with the square root of time (t1/2), reflecting the continuous generation of ... simultaneous profiling of optical and electrochemical properties can enhance the overall selectivity of different sensing (31) and detection (32) applications Such coupling of two modes of selectivity...

Ngày tải lên: 25/10/2013, 08:20

... mortality and illnesses Air Pollution and the Health of New Yorkers: The Impact of Fine Particles and Ozone I of deaths, hospital admissions and emergency department visits (Tables and 2) Ozone ... Control and Prevention, Danaei 2009) Air Pollution and the Health of New Yorkers: The Impact of Fine Particles and Ozone I Fine Particles (PM2.5) are small, airborne particles with a diameter of ... Pollution and the Health of New Yorkers: The Impact of Fine Particles and Ozone Overall, older adults (65 years of age and older) have much higher rates of respiratory hospitalizations and account...

Ngày tải lên: 06/03/2014, 16:20

... reference (frontal, profile, median) comparative size and spacing of features • degree of symmetry of arrangements of objects about centre of mass, major axes and planes of references of the whole product ... dimension of one object (or feature) and that of another A number of standard good proportion exist (e.g the golden section) Areal and volumetric refers to similar relations in the areas and volumes of ... coverage and variations of • complementary and opponent colours • different luminance intensity, hue, or saturation degree of asymmetry about centre of mass, major axes, and planes of reference...

Ngày tải lên: 30/03/2014, 16:20

... spectra (400–1100 cm–1) of magnetite synthesized with and without additives Table 1: Size and IR band of magnetite particles prepared in various additives Stearic acid Ligand None added 570.2 (+0.9) ... purity of the products via the absence of other phases of iron oxide such as maghemite or hematite in samples 3.2 TEM Analyses 3.2.1 Size and size distribution The average size and standard deviation ... the size and size distribution of resultant products In relation to the normally prepared magnetite, the type of additives used can be divided into three categories based upon the size and size...

Ngày tải lên: 07/08/2014, 14:20

... S.F., Effects of light regime on the growth, leaf morphology and water relation of seedlings of two species of tropical trees, Œcologia 58 (1983) 314–319 [11] Fisher J.B., Sun and shade effect ... percentage of long and short lateral branches on the three kinds of branches and determined whether the terminal shoot was a long or short shoot [20, 26] To avoid differences due to the age of the ... shading can alter the plant architecture as a result of effects on cell division and differentiation as well as organ size and structure [25] Studies of architectural plasticity provide useful insight...

Ngày tải lên: 08/08/2014, 14:21

... study, in which the effects of heights and rings and their interaction are all fixed, and those of provenances/species, trees and radii and all other interactions are random Orthogonality was obtained ... degree of variation of wood properties within trees is of great concern The fast growth rate of South African pine and the resulting relatively short rotation age, cause an increased proportion of ... those of the controls In spite of the large percentage of earlywood and differences in cross-sectional dimensions of tracheid cells that characterised the wood of P tecunumanii, all provenances of...

Ngày tải lên: 08/08/2014, 19:21

... and derived from the 403 artificial randomisation sequences generated by random re-ordering or randomisation [20] of each of the original optimum window sequences The plot for a window size ... Normal Distribution with E(θ) = 100° and standard deviation of 0.7° and in figure 7d, θ is from a Normal Distribution with E(θ) = 100° and standard deviation of 1.1° Table 3: Sample correlation ... assumption (θ = 100°) In all cases, the bulk properties of the plots were similar irrespective of the level of dispersion introduced by the different values of the standard deviation The hydrophobic moment...

Ngày tải lên: 13/08/2014, 22:22

... first base of the first complete codon, and the last base the last of the final complete codon The first and last codons were then removed from each exon, and remaining codons within 70 bp of the ... number of synonymous SNPs per synonymous site The numbers of synonymous sites and non-synonymous sites were calculated using the method of Miyata and Yasunaga [74] The ratio for a set of proteins ... "inverse relationship between evolutionary rate and age of mammalian genes" is an artifact of increased genetic distance with rate of evolution and time of divergence Mol Biol Evol 2006, 23:1-3 32...

Ngày tải lên: 14/08/2014, 08:21

... mDCs and moDCs [12] and moDCs and KG-1 cells [13], but no studies have compared the proteomes of all three cell types In this study we compare the proteomes of mDCs, moDCs and KG-1 cells, and ... presence of × 104 irradiated (3,000 rad 137Cs) immature mDCs and interactions Figure Cytokine expression profiles of cells Cytokine expression profiles of cells Cytokine production by mDCs and the ... The proteome of mDCs showed different levels of similarity compared with those of moDCs and KG-1 cells (correlation coefficient 0.68 and 0.62, respectively) (Figure 4) Duplicate gels of mDCs were...

Ngày tải lên: 14/08/2014, 18:20

... of Physical Properties 15 1.2.4 Determination of Octahedral Rotations 18 1.3 SrRuO3 Thin Films 19 1.3.1 Structure of bulk SRO and thin film SRO 21 1.3.2 Magnetic Properties ... simple structure and robust properties of perovskite oxide ferroelectrics have attracted a lot of attention and stimulated development in both fundamental understanding on ferroelectric and practical ... ferromagnetic and metallicity Consequently, competition between antiferromagnetic Chapter insulating and ferromagnetic metallicity will arise, leading to a rich variety of electronic and magnetic...

Ngày tải lên: 09/09/2015, 11:09

... Portland Cement 2.2 Physical properties of MTA 2.3 Biological Properties of MTA 13 2.4 Comparison of White and Gray MTA 20 2.5 Comparison between MTA and ... antimicrobial and antifungal properties similar to that of super-EBA and ZOE (Torabinejad et al 1995d, Al-Nazhan & Al-Judai 2003) The cytotoxic properties of MTA were lower than that of IRM and super-EBA ... by Holland et al (1999a), and Holland et al (2001b), that the mode of action of MTA was similar to Calcium hydroxide The basis for the biologic properties of MTA was due to the production of hydroxyapatite...

Ngày tải lên: 15/09/2015, 22:51

... from those of bulk gold and gold atoms, these properties of gold nanoparticles are very much depending on their shapes and sizes (Daniel and Astruc, 2004; Burda et al., 2005) Gold nanoparticles ... the polyelectrolytes and colloidal particles The nature and strength of the interactions depend on the properties of both polyelectrolytes and colloidal particles, composition of systems, solvent ... reproducibility of the vesicle size and quantity may thus be problematic 10 2.3 Nanoparticles and Vesicles Nanoparticles currently are under intense scientific research because of their wide variety of potential...

Ngày tải lên: 16/10/2015, 15:39

... increasing of anisotropy property of ferrites Ni1-xCoxFe2O4, hence it was the increasing of HC The increasing of HC proved that the soft magnetic property of ferrite NiFe2O4 changed to the hard magnetic ... synthesis of NiFe2O4 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 ... Ni1-xCoxFe2O4 and hence there is increasing of MS (table 3) Another side, it is known that the magnetizing process of hard ferrite consisting of single domain particles is the rotation process of magnetization...

Ngày tải lên: 13/02/2014, 04:20

... López-Urías, and Mu˜ oz-Sandoval (2005) n simulated the micromagnetic property of iron nanorings, and they found large coercive fields for din /dout > 0.5 (din and dout are the inner and outer diameters of ... phosphate and the type of crystal structure conversion should be the two most important reasons Investigation of the magnetic properties of Fe3 O4 and ␥-Fe2 O3 nanotubes revealed that both the two magnetic ... Schwertmann, 2003) Magnetic nanoparticles, especially those with special structures, often exhibit unusual magnetic behaviors different from that of bulk solids, owing to finite size effects and microstructure...

Ngày tải lên: 20/03/2014, 13:06

... (0 1) of WO3, according to JCPDS card No 20-1324 Figs 2c and d also show that the thin layer covering the nanorods is in amorphous The thickness of the amorphous coatings and the size of the ... consisting of WO3 and W There are two characteristic binding energies (707.4 and 711.4 eV) for the photoelectron line of Fe 2p3/2, as illustrated in Fig The binding energies of 707.4 and 711.4 ... In order to determine the magnetization contribution of different magnetic phases, a basic knowledge for the magnetic properties of bulk Fe and its oxides is crucial It is well known that bulk...

Ngày tải lên: 20/03/2014, 13:08

... interaction and we suppose in our studied samples there is canting structure as illustrated in Fig 2, where ϕ is the angle between direction of magnetic moment of A ions and magnetic moment of B1 and ... the spin order and magnetic behavior of samples, the field-cooled (FC) and zero field-cooled (ZFC) magnetization measurements were performed in magnetic field of 20 Oe (Fig ) The FC and ZFC curves ... and MSe from Tab 2, we could determine the canting angle between magnetic moments of B1 and B2 ions in octahedral sublattice We see that canting angle increases with increasing amount of nonmagnetic...

Ngày tải lên: 22/03/2014, 11:20

... m3ặmol)1, and numerous of its point mutants [26,30], and conrm the strong conservation of the magnetic anisotropies of low-spin hemin with His/cyanide ligation The 10 tilt of the major magnetic ... tilt of the major magnetic axis, z, away from the heme normal (z axis), a is the angle between the projection of the tilt of the z axis on the xÂ, y plane (dened direction of tilt of z and the ... the remainder of the target residues assigned by detection of NOESY residueheme and interresidue cross-peaks solely by the standard Mb fold, and the observation of relaxation effects and/ or sufcient...

Ngày tải lên: 23/03/2014, 17:22

... their magnetic properties Magnetization curves as a function of applied magnetic field (M-H) at RT of samples are revealed in Figure 6, where the contributions of the paramagnetism (PM) signals of ... 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 ... Grinstead, UK) was utilized to determine the bonding characteristics and the composition of the particles The measurements of magnetic properties were made using vibrating sample magnetometer (VSM,...

Ngày tải lên: 20/06/2014, 22:20

... ferroelectric and ferromagnetic properties (Mr = 0.02 emu/g, Hc = 4.51 kOe, Pr = 13.1 µC/cm2, and Ec = 9.9 kV/cm) of this composite system These ferromagnetic and ferroelectric properties were ... materials because of the coexistence of ferromagnetic and ferroelectric ordering at room temperature However, multiferroic materials which exhibit both high ferromagnetic and ferroelectric properties ... high ferromagnetic and magnetic properties is to produce composite materials which contain combined ferroelectric and magnetic phases These materials are called multiferroic composites, and many...

Ngày tải lên: 20/06/2014, 23:20