Nanostructured Multiferroics

Explore the state of the art in multiferroic materials with this cutting-edge resource

Nanostructured Multiferroics delivers an overview of recent research developments in the area of nanostructured multiferroics, along with their preparation, characterization, and applications. Covering single-phase and composite multiferroics, nanomultiferroics, and multiferroic composites, the book explains their physical properties, the underlying physical principles, and the technology and application aspects of the materials, including energy harvesting and spintronics.

With multiferroics undergoing a renaissance of renewed interest and development in the past few years, and with promising new breakthroughs in areas like superconductivity, spintronics, and quantum computing, Nanostructured Multiferroics offers both experienced scientists and young researchers inspirational and informative resources likely to spark ideas for further research.

Along with chapters discussing topics such as the specific heat and magnetocaloric properties of manganite-based multiferroics for cryo-cooling applications and the multiferroic properties of barium-doped BiFeO3 particles, further topics are:

• A comprehensive discussion about the physical properties of multiferroic nanocomposites
• An exploration of the basic theory underpinning a variety of multiferroic interactions
• An in-depth analysis of the engineering functionality in nanomultiferroics
• An introduction to nanostructured multiferroics accompanied by discussions of their synthesis, characterization, and common applications
• A treatment of multiferroic materials, as well as single-phase and composite multiferroics
• An examination of the use of nanostructured multiferroics in the field of spintronics

Perfect for materials scientists, Nanostructured Multiferroics will also earn a place in the libraries of solid-state physicists and chemists who seek to improve their understanding of the fundamentals of, and recent advances made in, multiferroics. The information contained within will inform anyone working in areas involving superconductivity, quantum computing, and spintronics.

Auteur

Raneesh Balakrishnan, PhD, is Assistant Professor in the Department of Physics, Catholicate College in Pathanamthitta, Kerala, India. His current research foci include nanomultiferroics, metal oxide thin films, plasma science, and electron microscopy. Dr. P. M. Visakh, PhD, is a prolific editor with more than 30 books already published. Now he is working as Assistant Professor in TUSUR University, Tomsk, Russia since 2017.

Contenu
Preface xi

Editors' Bio xiii

1 Nanostructured Multiferroics: Current Trends and Future Prospects 1
*P.M. Visakh and B. Raneesh*

1.1 Single-phase Multiferroics 1

1.2 Multiferroic Study of Pure BiFeO3 Synthesized Using Various Complexing Agents by SolGel Method 2

1.3 Nanostructured Multiferroics 3

1.4 Multiferroic Systems of BiFeO3 and BaTiO3 Nanostructures: New Ideas and Insights from Recent Magnetoelectric Advancements 5

1.5 Effective Properties of Multilayered Nanomultiferroics 6

1.6 Correlation between Grain Size, Transport, and Multiferroic Properties of Ba-doped BiFeO3 Nanoparticles 7

1.7 Specific Heat and Magnetocaloric Properties of Some Manganite-Based Multiferroics for Cryo Cooling Applications 8

1.8 Preparations, Characterization, and Applications of Multiferroic Nanocomposites 10

1.9 Conclusions 11

References 11

2 Single-Phase Multiferroics 23
*Piotr Graczyk and Emerson Coy*

2.1 Introduction 23

2.1.1 Considerations on Single-phase Multiferroics 26

2.1.2 Ferroelastic Multiferroics 29

2.2 Analysis of the Multiferroicity in the Hexagonal Manganites 30

2.2.1 Ferromagnetism in Hexagonal Manganites 30

2.2.2 Ferroelectricity in Hexagonal Manganites 32

2.3 Investigation of Charge States and Multiferroicity in Doped Systems 32

2.3.1 Sensitive Ordering-doped Perovskite Manganites 32

2.3.2 Frustrated LuFe2O4 Multiferroism in Controversy 35

2.3.3 From the DzyaloshinskiiMoriya Interaction to the Exchange Striction 37

2.4 Multiferroic Phases of Lone-pair Ferroelectrics: Bismuth-Based Compounds 38

2.5 Studies on Proper Geometric Ferroelectrics 41

2.6 Conclusions 44

Acknowledgments 44

References 45

3 Multiferroic Study of Pure BiFeO3 Synthesized Using Various Complexing Agents by SolGel Method 51
*Vivek Verma, Neelam Singh, and Jarnail Singh Bangruwa*

3.1 Introduction 51

3.2 Experimental 52

3.3 Results and Discussion 53

3.3.1 Structural Analysis 53

3.3.2 Morphological Analysis 54

3.3.3 FTIR Analysis 55

3.3.4 Magnetic Analysis 57

3.3.5 Ferroelectric Analysis 58

3.3.6 Dielectric Analysis 59

3.3.7 Leakage Current Analysis 60

3.4 Conclusions 61

References 62

4 Nanostructured Multiferroics 63
*Heng Wu and Xinhua Zhu*

4.1 Introduction 63

4.2 Multiferroic Nanoparticles 64

4.2.1 Solid-state Reactions 65

4.2.2 Molten-salt Synthesis (MSS) 66

4.2.3 Mechanochemical Synthesis 66

4.2.4 Wet Chemical Methods 68

4.2.4.1 SolGel Process 68

4.2.4.2 Hydrothermal/Solvothermal Process 69

4.2.4.3 MicrowaveHydrothermal (MH) Process 70

4.3 Nanocomposites 73

4.4 CoreShell Nanostructures 75

4.5 Nanostructures and Thin Films for Multifunctional Applications: Technology, Properties, and Devices 77

4.5.1 Fabrication Technologies 78

4.5.2 Physical Properties 79

4.5.2.1 Ferroelectric Properties 79

4.5.2.2 Magnetic Properties 81

4.5.2.3 Photocatalytic Properties 82

4.5.3 Multiferroic Devices 82

4.6 Thin Films for Photovoltaic Applications 84

4.7 Conclusions 87

Acknowledgments 88

References 88

5 Multiferroic Systems of BiFeO3 and BaTiO3 Nanostructures: New Ideas and Insights from Recent Magnetoelectric Advancements 95
*K.C. Verma, R. K. Kotnala, and Navdeep Goyal*

5.1 Introduction to Multiferroics 95

5.1.1 Multiferroic Approaches Toward Magnetoelectric Memories 96

5.1.2 Multiferroic Perovskites 97 5.1.3 Mult...