Cobalt Oxides From Crystal Chemistry to Physics

Unparalleled in the breadth and depth of its coverage of all important aspects, this book systematically treats the electronic and magnetic properties of stoichiometric and non-stoichiometric cobaltites in both ordered and disordered phases. Authored by a pioneer and a rising star in the field, the monograph summarizes, organizes and streamlines the otherwise difficult-to-obtain information on this topic. An introductory chapter sets forth the crystal chemistry of cobalt oxides to lay the groundwork for an understanding of the complex phenomena observed in this materials class. Special emphasis is placed on a comprehensive discussion of cobaltite properties in different allotropes, such as trigonal, hexagonal and Ruddlesden-Popper type. Providing a thorough introduction to cobalt oxides from a chemical and physical viewpoint as a basis for understanding their intricacies, this is a must-have for both experienced researchers as well as entrants to the field.

Bernard Raveau is Emeritus Professor at the University of Caen, France. He received his formal education at this University, and at Ecole Nationale Sup?rieure de Chimie de Caen as Engineer, and obtained his PhD degree in Physics in 1966. He was Director of CRISMAT, the Laboratory for Crystallography and Materials Science, in Caen, from 1986 to 2004, where he presently continues carrying out his research. He is the founder of the National Research Centre of Technology for Materials, CNRT Mat?riaux, in Caen, and has been Director of this Centre from 2000 to 2010. Bernard Raveau is a specialist of crystal chemistry and discovered many new transition metal oxides, including high Tc superconducting cuprates, CMR manganites, thermoelectric cobaltites and transition metal phosphates. Author of more than 1300 journal publications, and three books, he has received numerous awards including Berndt Mathias Prize and European Italgaz Prize. He is a member of the Institut Universitaire de France, of Acad?mie des Sciences, of the Indian Academy and Fellow of the Royal Society.

Dr. Md. Motin Seikh is Assistant Professor in the Department of Chemistry at Visva-Bharati University, Santiniketan, West Bengal, India. He has obtained his PhD from the Solid State and Structural Chemistry Unit, Indian Institute of Science (IISc), Bangalore in 2006. He carried out his postdoctoral research at Laboratoire CRISMAT in Caen, France for two years from 2006 to 2007. Dr. Seikh has published very original papers on various aspects of strongly correlated electron oxides, mainly manganites, ferrites and cobaltites. For his outstanding research contribution he received the Best Thesis Award for his PhD in materials chemistry from IISc in the year 2006. He was also a recipient of Junior and Senior Research Fellowship of the Government of India, and a visiting scientist under the programme of the Japanese Society for the Promotion of Science in the year 2004. He has also authored ?Investigations on Transition Metal Oxides? Lambert Academic Publishing, Germany in 2010.

General Introduction
PART I. CRYSTAL CHEMISTRY OF COBALT OXIDES
Introduction
Stoichiometric Perovskites LnCoO3
Stoichiometric Ln1-x Ax CoO3 Perovskites (A=Ca, Sr, Ba)
Oxygen Deficient Perovskites: Order-Disorder Phenomena in the Distribution of Anionic Vacancies
The Ordered Double Stoichiometric Perovskite LaBaCo2O6
Hexagonal Perovskite and Derivatives
The RP-type Cobaltites: Intergrowths of Perovskite and Rock Salt Layers and Derivatives
Cobaltites with a Triangular Lattice
Some other Original Cobaltites
CaCo2O4, Ba6Ln2Co4O15, RbCoO2, BaCoO2, Ln2BaCoO5, Ba2CoO4
PART II. ELECTRONIC AND MAGNETIC PROPERTIES OF STOICHIMETRIC PEROVSKITE COBALTITES
Stoichiometric LnCoO3 Perovskites
Stoichiometric SrCoO3: Ferromagnetism and Metallic Conductivity
Stoichimetric Ln1-x Ax CoO3 Perovskites (A=Ca, Sr, Ba)
Double Ordered Perovskite LaBaCo2O6
PART III. ELECTRONIC AND MAGNETIC PROPERTIES OF OXYGEN DEFICIENT PEROVSKITE COBALTITES
Disordered Perovskites
Ordered "112" LnBaCo2O5 Perovskites
Stoichiometric LnBaCo2O5 Perovskites
Ferromagnetism and Metallic Conductivity
PART IV. ELECTRONIC AND MAGNETIC PROPERTIES OF RP PHASE TYPE COBALTITES
Disordered RP Phase Perovskites
Ordered RP Phase Perovskites
Stoichiometric RP Phase Perovskites
Ferromagnetism and Metallic Conductivity
PART V. MAGNETIC AND TRANSPORT PROPERTIES OF COBALTITES WITH A TRIANGULAR LATTICE
Spinels
"114" LnBaCo4O7 Cobaltites
NaxCoO2
Misfit Cobaltites
Unidimensional Ca3Co2O6