By Prof. Dr. Bernard Raveau, Prof. Dr. Md. Motin Seikh(auth.)

Exceptional within the breadth and intensity of its insurance of all very important elements, this e-book systematically treats the digital and magnetic houses of stoichiometric and non-stoichiometric cobaltites in either ordered and disordered stages. Authored by means of a pioneer and a emerging big name within the box, the monograph summarizes, organizes and streamlines the differently difficult-to-obtain info in this subject. An introductory bankruptcy units forth the crystal chemistry of cobalt oxides to put the basis for an realizing of the complicated phenomena saw during this fabrics category. particular emphasis is put on a finished dialogue of cobaltite actual houses in several structural households.

Providing an intensive advent to cobalt oxides from a chemical and actual standpoint as a foundation for knowing their intricacies, this can be a must-have for either skilled researchers in addition to entrants to the field.

Chapter 1 Crystal Chemistry of Cobalt Oxides (pages 3–70):
Chapter 2 digital and Magnetic homes of Stoichiometric Perovskite Cobaltites (pages 71–128):
Chapter three digital and Magnetic homes of Oxygen?Deficient Perovskite Cobaltites Sr1?xLnxCoO3?? and SrCo1?xMxO3?? (pages 129–178):
Chapter four digital and Magnetic houses of Ruddlesden–Poepper?Type Cobaltites (pages 179–210):
Chapter five digital and Magnetic houses of Cobaltites with a 3D “Triangular Lattice” (pages 211–247):
Chapter 6 digital and Magnetic homes of “Triangular” Layered Cobaltites (pages 249–295):
Chapter 7 digital and Magnetic homes of the “Unidimensional” Cobaltite Ca3Co2o6 (pages 297–319):

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Additional resources for Cobalt Oxides: From Crystal Chemistry to Physics

Example text

5 [229]. 8 Cobaltites with a Triangular Lattice distinct behavior of Co(1) and Co(2) sites is directly linked to the periodic Coulomb potential arising from Naþ chains, the charges on cobalt sites becoming mobile above TCO in the metallic state. 82 [232]. The discovery of superconductivity in NaxCoO2ÁyH2O, with Tc $ 5 K [212] has attracted a lot of attention. 35. 7CoO2, the in-plane a lattice parameter being slightly contracted, owing to the lower Na content that results in the partial oxidation of the Co3þ ions to smaller Co4þ  ions.

30) consists of two interpenetrating monoclinic subsystems. 62,” made of CdI2-type “CoO2” layers and rock salt-type “Ca2CoO3” layers. salt type (second subsystem). Basically, the rock salt layer is formed from [CaO][CoO] [CaO] layers. There is an incommensurate spatial modulation along one of the two inlayer crystal axes, that is, the b-axis caused by a misfit between the two subsystems. The CoO2 sheets, which form a triangular 2D network of edge-sharing CoO6 octahedra, are believed to be a conduction plane.

2 Double-Layered RP Cobaltites: Sr3ÀxLnxCo2O7Àd type The n ¼ 2 members of the RP cobaltites are much more difficult to stabilize. The pure ideal member Sr3Co2O7 has never been synthesized. 27, was synthesized [158–161]. 4 A. 14a). The O(3) site is found to be less occupied and the predominant cobalt geometry will be pyramidal. However, the presence of some octahedra cannot be ruled out. The coordination around cobalt may be tetrahedral if the O(4) site is unoccupied [161]. 14b), the anionic vacancies between the pyramidal layers being filled at 13% only by oxygen.

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