C N R RAO
Articles written in Bulletin of Materials Science
Volume 2 Issue 3 August 1980 pp 193-199
Systematics in the electrical and magnetic properties of transition metal perovskites LnBO3 (Ln=rare-earth ion, B=3
Volume 3 Issue 2 July 1981 pp 75-90 Biswas Memorial Symposium On The Chemistry And Physics of Solids, Phase Transitions
A few types of phase transitions in solids of interest to the author are discussed after a brief presentation of the general features of phase transitions. The different systems discussed include low-dimensional solids, polytypes, organic solids, plastic crystals, glasses and silver selenide. Spin-state transitions and dipole glasses are also briefly examined.
Volume 5 Issue 3-4 August 1983 pp 1-
Volume 7 Issue 3-4 October 1985 pp 155-178
An increasing number of inorganic solids forming long-period structures due to recurrent intergrowth of two chemically distinct but structurally related units are getting to be known in recent years. These novel structures have given rise to new chemistry at solid-solid interfaces. Besides intergrowth structures with long-range order, many solids with random intergrowth (similar to stacking faults in polytypes) are known. Ordered integrowth gives rise to homologous series of structures in many systems. Barium ferrites, the Aurivillius family of oxides and other perovskite-related oxides, siliconiobates, and tungsten oxide bronzes are some of the systems exhibiting ordered intergrowth structures. Both ordered and disordered intergrowths are fruitfully investigated by high resolution electron microscopy. The main emphasis in this article is on intergrowth structures where the component units are compositionally different. These systems are obviously most fascinating since compositional change occurs across each interface (intergrowth plane), unlike in polytypic materials where the composition remains constant. Even in ordered intergrowth structures, there is always some disorder. If order in an intergrowth structure does not prevail over large distances, but occurs only over shorter stretches (say, a few repeats of the sequence), it becomes difficult to describe the solid except in terms of the gross composition and where possible, the unit cell dimensions. Structures with occasional intergrowths are found in a variety of materials such as
Volume 10 Issue 1-2 March 1988 pp 1-1
Volume 10 Issue 4 July 1988 pp 267-267
Volume 11 Issue 2-3 November 1988 pp 87-87
Volume 11 Issue 2-3 November 1988 pp 88-88
Volume 14 Issue 2 April 1991 pp 93-94 International Conference On Superconductivity—I
Volume 14 Issue 3 June 1991 pp 531-532 International Conference On Superconductivity—II
Volume 14 Issue 4 August 1991 pp 889-890 International Conference On Superconductivity—III
Volume 16 Issue 6 December 1993 pp 405-431
Solid state chemistry was in its infancy when the author got interested in the subject. In this article, the author outlines the manner in which the subject has grown over the last four decades, citing representative examples from his own contributions to the different facets of the subject. The various aspects covered include synthesis, structure, defects, phase transitions, transition metal oxides, catalysts, superconductors, metal clusters and fullerenes. In an effort to demonstrate the breadth and vitality of the subject, the author shares his own experiences and aspirations and gives expression to the agony and ecstacy in carrying out experimental research in such a frontier area in India.
Volume 17 Issue 6 November 1994 pp 563-575
Scanning tunneling microscopy of C70 films deposited on HOPG and gold substrates has been carried out to investigate the 2D packing, defects and disorder. Besides providing direct evidence for orientational disorder, high resolution images showing the carbon skeleton as well as the molecular arrangement in a solid solution of C70 and C60 are presented. Tunneling conductance measurements indicate a small gap in the C70 film deposited on HOPG substrate.
Volume 22 Issue 3 May 1999 pp 141-151 Plenary Lectures
Supramolecular synthesis is being increasingly employed in materials design. In this article, the design of porous solids is discussed as a case study. Examples from recent work in the areas of open-framework inorganic materials, mesoporous solids and organic porous solids are presented to illustrate this important aspect of materials chemistry.
Volume 41 Issue 5 October 2018 Article ID 0129
Discovery of the amazing properties of graphene has aroused great interest in other 2D materials. 2D inorganic analogues of graphene such as the transition metal dichalcogenides have been investigated widely and these materials,especially MoS$_2$, exhibit many properties of interest. In particular, they possess properties of direct use in energy devices. In this article we review the synthesis and properties of the 2D materials of relevant transistors, sensors, photodetectors, supercapacitors and batteries as well as in oxygen reduction and hydrogen evolution reactions.
Volume 43, 2020
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