thermal magnetic and electric properties of semiconductors
handbook of physics
... Semiconductors 29.9.1 Thermal, magnetic and electric properties of semiconductors Part VI Appendix 30 Measurements and measurement errors 30.1 Description of ... tables of standard values and material properties Access to information is direct and swift through the user-friendly layout, structured table of contents, and extensive index Concepts and formulas ... connection of resistor and capacitor 15.2.7 Parallel connection of a resistor and a capacitor 15.2.8 Parallel connection of a resistor and an inductor 15.2.9 Series connection of...
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Báo cáo "Effects of Zn content on the magnetic and magnetocaloric properties of Ni-Zn ferrites " pdf
... 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...
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Báo cáo hóa học: " Synthesis, magnetic and optical properties of core/shell Co1-xZnxFe2O4/SiO2 nanoparticles" pot
... investigate the effect of Zn2+ partially substituting for Co2+ in CoFe2O4 nanoparticles (Co1-xZnxFe2O4; x = 0, 0.5, and 1) and shelling with silica on the magnetic and optical properties of the ferrite ... Kaiser M: Effect of nickel substitutions on some properties of Cu-Zn ferrites J Alloy Compd 2009, 468(1-2):15-21 19 Iqbal MJ, Siddiquah MR: Electrical and magnetic properties of chromiumsubstituted ... transformation of the magnetization state from ferromagnetic state to paramagnetic state with the increase of the firing temperature from 400°C to 800°C The Ms and Hc values of the prepared coated and uncoated...
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Báo cáo hóa học: " Magnetic and Cytotoxicity Properties of La12xSrxMnO3 (0 £ x £ 0.5) Nanoparticles Prepared by a Simple " pptx
... SEM, and TEM Magnetic properties of the samples were investigated by vibrating sample magnetometer (VSM) The effects of Sr concentration and thermal decomposition temperature on the magnetic properties ... presence of an absorption band of CO32- functional group at around 860–900 cm-1 was observed These bands correspond to the impurity phase of SrCO3 or La2CO3OH which disappears at higher temperature of ... concentration and thermal decomposition temperature The slopes of the M–H curves in the range from kOe to 10 kOe for the samples with x values of 0.1 and 0.2 are equal to those of x = (LMO),...
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DEFECT INDUCED NOVEL ELECTRICAL, MAGNETIC AND OPTICAL PROPERTIES OF TIO2 THIN FILMS GROWN BY PULSED LASER DEPOSITION
... and ferromagnetism 33 Brief history of Kondo effect 34 Experimental Methods 38 3 Magnetic and electrical transport of Ta0.06Ti0.94O2 39 v Thermopower and magnetic ... application of identification of compounds, there are a large number of reported works on the characterisation of concentration and mobility of free carriers, strain and crystal quality, determination of ... Ta and Nb Recently discovered water splitting ability of TiO2 has generated a great deal of interest in the field of energy and environment science research because of its unique conduction band...
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Electronic, magnetic and optical properties of atomically controlled complex oxide heterostructures and interfaces
... Xie, Dr Jiabo Yi, Tom Wijnands, Wentao Xu, Dr Kalon Gopinadhan, Prof Alexander Brinkman, Asst Prof Wei Chen, Prof Ganaphathy Baskaran, Assoc Prof Jun Ding, Asst Prof Andrivo Rusydi, Joost Beukers, ... materials and structures, exploration of the properties, understanding of the underlying mechanisms and novel designs of possible devices are needed This chapter aims to give an overview of my research ... selective occupancy of interface subbands of the nearly degenerate Ti orbital in the STO To explore new type of interfaces and to understand the driving mechanisms behind the emerging properties in...
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Structure, magnetic and transport properties of magnetic oxide materials and exploration of magnetic oxides semiconductor (zno) heterostructures
... determining the microstructure, magnetic and transport properties of the magnetic oxide thin films (2) A whole picture of the structure and magnetic properties of half metallic magnetite (Fe3O4) ... 300K and 5K 116 XI LIST OF FIGURES Figure 1 The density of state of non -magnetic, ferromagnetic, and half metallic meterials Figure Schematic diagram of Spin filter tunneling Below the TC of ... density of states of majority ( ) or minority electrons at the Fermi level Figure 1.1 shows the density of states (DOS) of a non -magnetic metal and a magnetic metal Since the number of spin up ( ) and...
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Electrical, magnetic and magnetocaloric properties of selected b site substituted manganites
... method, dc electrical, magnetic, magnetothermal and thermal expansion (strain), characterization techniques Chapter-3 describes the electrical, magnetic, thermal expansion and magnetocaloric properties ... destabilization/destruction of charge ordering (CO) simultaneously leads to very interesting structural, electrical, thermal and magnetic properties The coupling between magnetic and structural order parameters and ... influence of impurity doping at Mn-site in charge ordered (CO) manganites, on the destruction of CO state and other physical properties, i.e structural, electrical, magnetic and magnetothermal properties, ...
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Electronic, magnetic and optical properties of oxide surfaces, heterostructures and interfaces role of defects
... and magnetic properties of SrRuO3/LaAlO3 (SRO/LAO) superlattices By varying the thickness of SRO layers in the superlattices, we are able to modulate both electrical and magnetic properties of ... lot of people have helped me to further my research and I am grateful to all of them Especially, I would like to sincerely thank my supervisors Prof Ariando and Prof T Venkatesan for educating and ... will ever be indebted to Prof Ariando and Prof T Venkatesan I would like to take this opportunity to thank Prof J M D Coey from Ireland, who has ever been a visiting professor in Nanocore for several...
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Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... the metal particles, (ii) formation of liquid droplet of metal and Si/SiOx and (iii) the precipitation in the form of solid nanowires after super-saturation of liquid metal–Si/SiOx droplet at ... of crystalline Si core and amorphous SiO2 outer shell structure as confirmed by HRTEM image and SAED pattern On the other hand, the formation of crystalline Si–SiO2 core-shell nanowires first and ... agglomerated clusters consisting of high density of nanowires The magnified view of a single cluster is depicted in the inset of Fig 2(d) These observations suggest that growth of nanowires in the present...
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báo cáo hóa học:" Ultrasonication effects on thermal and rheological properties of carbon nanotube suspensions" pot
... ultrasonication time effects on sediment and the thermal conductivity of the carbon nanotubeethylene glycol nanofluids and found that thermal conductivity of the nanofluids increased with sonication ... B and n are constants, and t is the sonication time The data in Figures 13 and 14 were fit to curves of the forms given by (Equations and 2) The values of the constants and the coefficients of ... Ultrasonication effects on thermal and rheological properties of carbon nanotube suspensions Binglu Ruan*1,2 and Anthony M Jacobi1 Mechanical Science and Engineering, University of Illinois, Urbana,...
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Báo cáo hóa học: " Initial susceptibility and viscosity properties of low concentration e-Fe3 N based magnetic fluid" pdf
... volume fraction due to the existence of nonmagnetic layer at the surface of the particles The magnetic fraction of solid particles and the nonmagnetic layer of the particles can computed from ref ... susceptibility of the Fig Images of the carrier liquid (0) and different concentration magnetic fluid samples (1–6) Fig TEM images of e-Fe3N magnetic particles 123 Nanoscale Res Lett (2007) 2:155–160 157 magnetic ... to ensure the homodisperse of magnetic particles The image of carrier liquid (0) and six e-Fe3N magnetic fluid samples (1–6) is present in Fig The size and morphology of e-Fe3N nanoparticles were...
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Báo cáo vật lý: "Compatibility, Mechanical, Thermal, and Morphological Properties of Epoxy Resin Modified with Carbonyl-Terminated Butadiene Acrylonitrile Copolymer Liquid Rubber" pps
... CTBN and the EP, and to investigate the thermal, mechanical, and morphological properties of the modified EP EXPERIMENTAL 2.1 Materials The clear epoxy 331, with an epoxide equivalent weight of ... effect of CTBN content on the glass transition temperatures (Tg) of the EP Properties of Modified Epoxy Resin 3.3 Tensile Properties Table shows the effect of CTBN content on the tensile properties ... flexural strength and modulus of modified EPs A similar trend was found in the case of the tensile properties; the flexural strength and modulus of modified EPs are lower than those of the unmodified...
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Calculations of microwave permeability, permittivity and absorption properties of magnetic particle composites
... band to 2GHz Designation Q band 30 to 50GHz S band to 4GHz U band 40 to 60GHz C band to 8GHz V band 50 to 75GHz X band to 12GHz E band 60 to 90GHz Ku band 12 to 18GHz W band 75 to 110GHz K band ... in the design of magnetic absorber through the calculations of magnetic permeability and electric permittivity The emphasis of this thesis is to calculate and design the intrinsic and extrinsic ... dielectric permittivity and magnetic permeability are effective properties of the absorber The absorber consists of inclusions and matrix The permittivity and permeability are influenced by magnetic...
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Structural, magnetic and transport study of DBPLD fabricated magnetic semiconductors 4
... material and optical probing of “magnetism” that details the electronic and magnetic properties of the ground states of metal centers [4] c As the underlying magnetic mechanism of Zn1-xCoxO thin films ... growth of GaMnN diluted magnetic semiconductors and its magnetic properties, J Crystal Growth, 251, pp 331-336, 2003 16 H Ohno, H Munekata, T Penney, S von Molnar and L.L Chang, Mangnetotransport Properties ... and T Kawai, Magnetic and electric properties of transition-metal-doped ZnO films, Appl Phys Lett 79, pp 988-990, 2001 19 T Fukumura, Z W Jin, M Kawasaki, T Shono, T Hasegawa and H Koinuma, Magnetic...
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Structural, magnetic and transport study of DBPLD fabricated magnetic semiconductors 1
... the magnetic spins and the spins of the band edge carrier causes the dramatic enhancement of band edge Zeeman splittings and related properties in an external magnetic field The coupling of magnetic ... center of the octahedral site rather than at tetrahedral sites Chapter focuses on the most important properties for a DMS; magnetic and electrical properties The magnetic and transport behaviours of ... Zn1-xCoxO thin films (3) Characterization of the magnetic and electrical properties of Zn1-xCoxO thin films Magnetism and electricity are the most important properties for a DMS In this argument,...
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Structural, magnetic and transport study of DBPLD fabricated magnetic semiconductors 2
... Theoretical calculated valence band spectrum of ZnO with d, p and s partial density of states Light curves describe the contribution of s band, p band and d band to the density of states, as shown in ... contribution of s band, p band and d band to the DOS They have been calculated on the basis of the results from one-panel calculations with s, p and d muffin-tin orbitals placed on TM and oxygen ... represents the mixture of O 2p and Zn 4s P4 is on the top of O 2p, a feature of the spectra of the Zn1-xCoxO thin films that is different from that of ZnO, reflecting the effect of the Co Ref [15]...
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Structural, magnetic and transport study of DBPLD fabricated magnetic semiconductors 3
... University of Singapore 119 CHAPTER 6: DEPENDENCE OF Zn1-xCoxO PROPERTIES ON Co CONCENTRATION 6.4 Summary In this chapter, we studied the magnetic and electrical properties of Zn1-xCoxO thin films and ... temperature of the film with Co concentration of x = 0.02 National University of Singapore 103 CHAPTER 6: DEPENDENCE OF Zn1-xCoxO PROPERTIES ON Co CONCENTRATION 6.2.3 Magnetic Properties of Zn1-xCoxO ... decreases again when the magnetic field increases beyond 2000 Oe This is the result of competition of positive magnetic moment from the film and negative magnetic moment from the diamagnetic sapphire...
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INVESTIGATION OF ELECTRIC AND THERMOELECTRIC PROPERTIES OF GRAPHENE NANORIBBON
... 3.112D plot of Conductance of graphene nanoribbon with width of 60nm as a function of Vsd and Vbg at T=4.3 K 51 Figure 4.1 Optical image of thermal power device, is heater, and is thermometers ... the D band, G band and 2D band The D band appears due to the lattice defect or molecule absorbers, the G band indicates the vibrational state of graphene‟s sp2 bonding, while the 2D band shows ... 1.1.3 Band structure in graphene 18 1.1.4 Band gap in graphene nanoribbon (GNR) 19 1.2 Thermoelectrical properties of graphene 21 1.2.1 Seebeck coefficient and the figure of merit...
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Effect of thickness on the physical, thermal and chemical properties of ultra thin polymer films
... dependence on the thermal, physical and chemical properties of ultra-thin films of selected polymers In the first part of our study, we investigate the thermal and physical properties of hydrophilic ... thermal and transport properties when the film thickness approaches the bulk radius of gyration (Rg).9 Thus with important factors such as thickness of the films and the chemical properties of ... failures of adhesion to metals and degradation of dielectric properties The dimensions of the films will also be affected by water due to swelling Thus the moisture sorption behaviour of polyimide...
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