International Union of Materials Research Societies
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INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES
2004 So-miya Award Honors C.N.R. Rao and Anthony K. Cheetham The International Union of Materials Research Societies (IUMRS) has presented the 2004 So-miya Award to C.N.R. Rao, FRS, of the Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India, and to Anthony K. Cheetham, FRS, of the University of California, Santa Barbara (UCSB), for their collaboration on the synthesis and characterization of novel materials. Rao and Cheetham accepted the award last month in San Francisco during the 2004 Materials Research Society Spring Meeting/IUMRS 9th International Conference on Electronic Materials. The IUMRS awards committee stated that the collaboration between Rao and Cheetham has had far-reaching consequences in the synthesis and characterization of a variety of novel materials and has scaled new heights in terms of the ability to design solids of predetermined structure with predicted properties. It also marks an extraordinary accomplishment in international collaboration in materials research, transcending cultural and national boundaries and has few parallels, said the committee. Cheetham and Rao have collaborated for over three decades. Their collaboration has led to seminal publications in emerging areas of materials chemistry such as magnetic, nanoscale, and open-framework materials. One aspect of the joint research has focused on the magnetic properties of mixed-metal manganates. While these materials are best known for their colossal magnetoresistive (CMR) behavior, some members of this class exhibit other significant properties. For instance, BiMnO3 is a rare example of a phase in which ferromagnetism can coexist with ferroelectricity. Rao and Cheetham have worked extensively on this material, making thin films by nebulized spray pyrolysis and determining their magnetic structure by powder neutron diffraction. It has become clear that the ferromagnetism has its origins in the complex orbital ordering that is found in this phase. Another aspect of their work has been the synthesis of B–C–N, C–N, and B–N nanotubes and carbon-assisted synthesis of inorganic nanowires. Cheetham and Rao carried out pioneering investigations on open-framework tin and cobalt phosphates and zinc oxalates. These materials were often made by the use of structuredirecting amines. The most recent work led to sodalite networks formed with metal squarates by amine templating. The first article by Rao and Cheetham appeared in 1976, and in the last 10 years they have published about 40 papers. MRS BULLETIN/MAY 2004
C.N.R. Rao Their publications are among the most cited in materials chemistry. While they have worked at the cutting edge of science, the materials that they have synthesized have technological applications. For example, the CMR materials have potential applications in computer drives, and the nanomaterials are beginning to find utility in applications such as nanocomposites. In addition to their research collaboration, their cooperation has been multidimension
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