文摘
英文文摘
论文说明:Nomenclature
声明
Chapter 1 Introduction
1.1 Magnetic refrigeration
1.2 The development of magnetic refrigerators
1.3 An overview of the large MCE materials
1.3.1 First-order phase transition materials
1.3.2 Second-order phase transition materials
1.4 Outline of this thesis
References
Chapter2 Theoretical aspects
2.1 Thermodynamics of the magnetocaloric effect
2.2 Methods of the determination of magnetocaloric effect
References
Chapter3 Experimental techniques
3.1 Sample preparation
3.1.1 Sample preparation by arc melting
3.1.2 Heat treatment of the samples
3.2 Sample characterization
3.3 Magnetic measurements
Chapter4 Preparation,Structure,Magnetic and Magnetocaloric effects of MnCo1-xVxGe compounds
4.1 Introduction
4.2 Experimental
4.3 Results and discussion
4.3.1 Structure and phase analysis
4.3.2 The magnetic properties of the MnCo1-xVxGe samples
4.4 Concluding remarks
References
Chapter5 Magnetic properties and magnetocaloric effects in Mn1-xVxCoGe compounds
5.1 Introduction
5.2 Experimental
5.3 Results and discussion
5.4 Concluding remarks
References
Chapter6 B addition effects on the magnetic properties and magnetocaloric effects in MnCoGe compounds
6.1 Introduction
6.2 Experimental
6.3 Results and discussion
6.4 Concluding remarks
References
Publications
Projects
Acknowledgments