Physics of Magnetism Magnetic Materials 2011 Part 11 pot

... Photodiodes - World Activities in 2 011 300 a point source at infinity, incident on the back-illuminated, sapphire substrate waveguide undergoing multiple reflections and transmission into ... operates in planar configuration with an interdigitated contact structure on the growth surface of the intrinsic Photodiodes - World Activities in 2 011 302 Fig. 41...

Ngày tải lên: 19/06/2014, 21:20

... Probability plot of data on Ti-6Al-4V from National HCF program. Accelerated Test Techniques 95 3.4.2. Statistical analysis Data from staircase tests can be analyzed statistically by assuming any ... limited amount of data, particularly in the longer life region. The next set of data points, denoted as “Step data,” are experimental values of the cycles to failure in the last loading...

Ngày tải lên: 03/07/2014, 20:20

... submesh particle size. It is made by chemical reduction and is at least 99.9% pure, with amor- phous particles 12 to 138 ␮in (0.3 to 3.5␮m) in diameter. Atomized powder has spherical particles ... flake has the powder particles in the form of tiny laminar platelets which overlap in the coating film. The particles in Platinum flake No. 22 have an average diameter of 118 ␮in (3 ␮m) and thickn...

Ngày tải lên: 11/08/2014, 14:20

... Processes, Part 6: Phenolic Resins.” March, April, May, 1957). Equipment for Chemical Processes, Part 4: Plasticized PVC Sheet.” 1958). York: McGraw-Hill Book Co., 1969). 146 Materials Selection ... Creep: the dimensional change of a plastic under load with 152 Materials Selection Deskbook or is impregnated with partially cured resin. Application of heat may be req...

Ngày tải lên: 11/08/2014, 14:20

... perpendicular and parallel, to the plane of incidence. Through the use of the Maxwell equations with appropriate interfacial boundary conditions, the amplitudes of the components of the transmitted (&,l, ... 11. 2.6. Optical Properties of Thin Dielectric and Semiconductor Films The optical properties of dielectric and semiconductor films are colle...

Ngày tải lên: 11/08/2014, 20:21

... CONTENTS vii Chapter 14 . Soft -Magnetic Materials 14 7 14 .1. Introduction 14 7 14 .2. Survey of Materials 14 8 14 .3. The Random-Anisotropy Model 15 6 14 .4. Dependence of Soft -Magnetic Properties ... 13 . High-Density Recording Materials 13 1 13 .1. Introduction 13 1 13 .2. Magneto-Optical Recording Materials 13 3 13 .3. Materials for High-Density...

Ngày tải lên: 12/08/2014, 01:21

... discussed 23 SECTION 4 .2. FERROMAGNETISM all the steps from Eq. (3.1.4) to Eq. (3 .2. 2). This means that Eq. (3 .2. 2) should actually be written in the form Introducing the magnetic susceptibility ... the J = 5 /2 and J = 7 /2 levels but also due to a difference in energy separation between the levels of the J = 5 /2 manifold (g = 2/ 7 and the levels of the J = 7 /2...

Ngày tải lên: 12/08/2014, 01:21

... then given by 32 CHAPTER 4. THE MAGNETICALLY ORDERED STATE field dependence of the magnetization behaves as shown by curve (a) in Fig. 4 .3. 3. The slope of the first part of this curve is ... discuss the magnetic coupling in these materials in somewhat more detail. We consider a ferrimagnetic compound consisting of two types of magnetic atoms A and B, occupying the s...

Ngày tải lên: 12/08/2014, 01:21

... presence of fourfold-symmetry axes, only terms with n = 4 and m = 0, ± 4 are retained, which leads to where the coefficients of the terms have been calculated with the help of Eq. (5.2 .4) , keeping ... magnetic field will lift the degeneracy of each of the three doublet levels. Since a given magnetic field lowers and raises the energy of each of the sets of doublet...

Ngày tải lên: 12/08/2014, 01:21

... magnetic field of is the magnetic field in an infinitely long solenoid consisting of n turns per meter of coil and carrying an electric current of The unit of the magnetic induction or magnetic ... lines are diluted in diamagnetic materials, concentrated in paramagnetic materials, and strongly concentrated in ferromagnetic materials. In diamagnetic and paramagneti...

Ngày tải lên: 12/08/2014, 01:21

... fixed temperature the entropy of a system of magnetic moments can be lowered by the application of a magnetic field. The entropy is a measure of the disorder of a system, the larger its disorder, ... intersection of the two magnetization curves mentioned. Illustrative examples of measurements of 97 94 CHAPTER 10. CALORIC EFFECTS IN MAGNETIC MATERIALS In the abse...

Ngày tải lên: 12/08/2014, 01:21

... descriptions of magnetic anisotropy and its determination can be found in the textbooks of Chikazumi (1966) and McCaig and Clegg (19 87) . References Chikazumi, S. (1966) Physics of magnetism, ... reversal is the existence of magnetic- domain structures. Magnetic particles of sufficiently large size will generally not be uniformly magnetized but rather be composed of...

Ngày tải lên: 12/08/2014, 01:21

... temperature dependence of the Faraday rotation. This means that 14 Soft -Magnetic Materials 14.1. INTRODUCTION Soft -magnetic materials are mainly used in magnetic cores of transformers, motors, ... magneto-optical rotation 1 49 SECTION 14.2. SURVEY OF MATERIALS thousands of tons. The major part of this material is used for the generation and distribution of...

Ngày tải lên: 12/08/2014, 01:21

... polycrystalline alloys and offer the possibility of tailoring superior soft -magnetic properties for specific applications. In Fig. 14.2.8, the soft -magnetic properties of various groups of materials are ... dependence of the magnetic properties of various types of soft -magnetic materials is compared in Fig. 14.4.1. The random-anisotropy model apparently provides a g...

Ngày tải lên: 12/08/2014, 01:21

... magnets, 119 propagation field for Bloch walls, 113 radius of 4f electron charge cloud, 46 random-anisotropy model, 156 rare-earth-based magnet materials, 119 soft ferrites, 153 soft -magnetic materials, ... slip-induced anisotropy, 152 117 , 118 118 pair ordering, 152 pair-ordering model, 134 paramagnetic Curie temperature, 23, 27 paramagnetism of free ions, 11...

Ngày tải lên: 12/08/2014, 01:21