Share

DEFECTS AND FERROMAGNETISM IN TRANSITION METAL DOPED ZINC OXIDE

2016 Ferromagnetism
Download DEFECTS AND FERROMAGNETISM IN TRANSITION METAL DOPED ZINC OXIDE PDF Online Free

Author :
Release : 2016
Genre : Ferromagnetism
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis DEFECTS AND FERROMAGNETISM IN TRANSITION METAL DOPED ZINC OXIDE by : Sunil Thapa

Download or read book DEFECTS AND FERROMAGNETISM IN TRANSITION METAL DOPED ZINC OXIDE written by Sunil Thapa. This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal doped zinc oxide has been studied recently due to its potential application in spintronic devices. The magnetic semiconductor, often called Diluted Magnetic Semiconductors (DMS), has the ability to incorporate both charge and spin into a single formalism. Despite a large number of studies on ferromagnetism in ZnO based DMS and the realization of its room temperature ferromagnetism, there is still a debate about the origin of the ferromagnetism. In this work, the synthesis and characterization of transition metal doped zinc oxide have been carried out. The sol-gel method was used to synthesize thin films, and they were subsequently annealed in air. Characterization of doped zinc oxide films was carried out using the UV-visible range spectrometer, scanning electron microscopy, superconducting quantum interference device (SQUID), x-ray diffraction(XRD) and positron annihilation spectroscopy. Hysteresis loops were obtained for copper and manganese doped zinc oxide, but a reversed hysteresis loop was observed for 2% Al 3% Co doped zinc oxide. The reversed hysteresis loop has been explained using a two-layer model.

Physical Properties of Dilute Magnetic Semiconducting Oxides

2014-11-19
Download Physical Properties of Dilute Magnetic Semiconducting Oxides PDF Online Free

Author :
Release : 2014-11-19
Genre :
Kind : eBook
Book Rating : 565/5 ( reviews)

GET EBOOK


Book Synopsis Physical Properties of Dilute Magnetic Semiconducting Oxides by : Sudipta Bandyopadhyay

Download or read book Physical Properties of Dilute Magnetic Semiconducting Oxides written by Sudipta Bandyopadhyay. This book was released on 2014-11-19. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal doped ZnO has been studied from the perspective of its suitability in electronic applications. Bulk samples of Mn doped ZnO has been synthesized by solid state reaction and sol-gel techniques. Thin films of Mn doped ZnO has been synthesized by only sol-gel spin coating technique. So far as Co doped ZnO is concerned it is basically Co co-doped AZO [Al doped ZnO] film synthesized by sol-gel dip coating technique. Above 3 at% of Mn doping impurity phase has been developed for bulk powder sample. The impurity phase was completely or partially dissolved by ion beam irradiation. The role of Zn vacancy and substitutional replacement of Mn at Zn site is crucial for intrinsic ferromagnetism. Further counterbalancing antiferromagnetism and paramagnetism are also present. 2 at% Mn doped ZnO powder sample indicate metal insulator transition. Mn doped ZnO films exhibit defect induced ferromagnetism and interpreted in terms of bound magnetic polaron. Zn Vacancy favours and oxygen vacancy opposes intrinsic ferromagnetism in Mn doped ZnO film. Highly conducting Co co-doped AZO films shows potential for applications with interesting low temperature resistivity behaviour.

Handbook of Zinc Oxide and Related Materials

2012-09-26 Science
Download Handbook of Zinc Oxide and Related Materials PDF Online Free

Author :
Release : 2012-09-26
Genre : Science
Kind : eBook
Book Rating : 147/5 ( reviews)

GET EBOOK


Book Synopsis Handbook of Zinc Oxide and Related Materials by : Zhe Chuan Feng

Download or read book Handbook of Zinc Oxide and Related Materials written by Zhe Chuan Feng. This book was released on 2012-09-26. Available in PDF, EPUB and Kindle. Book excerpt: Through their application in energy-efficient and environmentally friendly devices, zinc oxide (ZnO) and related classes of wide gap semiconductors, including GaN and SiC, are revolutionizing numerous areas, from lighting, energy conversion, photovoltaics, and communications to biotechnology, imaging, and medicine. With an emphasis on engineering a

Defect-mediated Magnetism of Transition Metal Doped ZnO Thin Films

2009 Zinc oxide thin films
Download Defect-mediated Magnetism of Transition Metal Doped ZnO Thin Films PDF Online Free

Author :
Release : 2009
Genre : Zinc oxide thin films
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Defect-mediated Magnetism of Transition Metal Doped ZnO Thin Films by : Bradley Kirk Roberts

Download or read book Defect-mediated Magnetism of Transition Metal Doped ZnO Thin Films written by Bradley Kirk Roberts. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt:

Ion Beam Induced Defects and Their Effects in Oxide Materials

2022-02-23 Science
Download Ion Beam Induced Defects and Their Effects in Oxide Materials PDF Online Free

Author :
Release : 2022-02-23
Genre : Science
Kind : eBook
Book Rating : 62X/5 ( reviews)

GET EBOOK


Book Synopsis Ion Beam Induced Defects and Their Effects in Oxide Materials by : Parmod Kumar

Download or read book Ion Beam Induced Defects and Their Effects in Oxide Materials written by Parmod Kumar. This book was released on 2022-02-23. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the applications of ion beam techniques in oxide materials. Oxide materials exhibit defect-induced physical properties relevant to applications in sensing, optoelectronics and spintronics. Defects in these oxide materials also lead to magnetism in non-magnetic materials or to a change of magnetic ordering in magnetic materials. Thus, an understanding of defects is of immense importance. To date, ion beam tools are considered the most effective techniques for producing controlled defects in these oxides. This book will detail the ion beam tools utilized for creating defects in oxides.

You may also like...