Physics of Magnetism Magnetic Materials 2011 Part 1 pps

... combina- Cultivation of soya and other legumes 4 Contents 1 Introduction 6 2 The importance of legumes 7 2 .1 Legumes 7 2.2 Soya 9 3 Cultivation requirements for legumes 10 3 .1 Suitable ... van Otterloo-Butler Printed by: Digigrafi, Wageningen, The Netherlands ISBN: 9 0-8 57 3-0 1 1- 2 NUGI: 835 Contents 5 6.3 Soya and other legumes...

Ngày tải lên: 02/07/2014, 05:20

... the lymphadenopathy is a normal finding or one that requires further study, up to and including biopsy. Soft, flat, submandibular nodes (<1 cm) are often palpable in healthy children and ... healthy children and young adults, and healthy adults may have palpable inguinal nodes of up to 2 cm, which are considered normal. Further evaluation of these normal nodes is not...

Ngày tải lên: 07/07/2014, 01:20

... rate and raising it to the number of periods in a year. For example, a 1% per month rate has an APY of 12 .68% (1. 01^ 12). Annual percentage rate (APR) The periodic rate times the number of periods ... treatment of interest expense and dividend payments. 9 Dictionary of Finantial and Business Terms Lico Reis - Consultoria & L?nguas licoreis@terra.com.br A...

Ngày tải lên: 07/07/2014, 22:20

... Bibliography 11 FundamentalsofFractureMechanics 11 .1Introduction 11 .2FundamentalsofFractureMechanics 11 .3NotchConcentrationFactors 11 .4GrithFractureAnalysis 11 .5EnergyReleaseRateandCompliance 11 .6LinearElasticFractureMechanics 11 .7ElasticPlasticFractureMechanics 11 .8FractureInitiationandResistance 11 .9InterfacialFractureMechanics 11 .10 DynamicFractureMechanics 11 .11 Sum...

Ngày tải lên: 11/08/2014, 15:20

... 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