Details of Grant 

EPSRC Reference:	GR/R46571/01
Title:	Solvothermal synthesis of transition-metal oxides
Principal Investigator:	Walton, Professor RI
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department:	Chemistry
Organisation:	University of Exeter
Scheme:	Standard Research (Pre-FEC)
Starts:	01 October 2001	Ends:	30 September 2004	Value (£):	62,990
EPSRC Research Topic Classifications:	Chemical Synthetic Methodology
EPSRC Industrial Sector Classifications:	Chemicals No relevance to Underpinning Sectors
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Panel History:
Summary on Grant Application Form
Transition-metal oxides are materials that exhibit a diversity of electronic and magnetic properties and unusual structural features in the solid state and for many years have found application in electronic devices (capacitors, switches, magnetic components etc.). In the preparation of transition-metal oxides, hightemperature methods in the solid state (up to 1000 C) have traditionally been used. This proposal is concerned with investigating low-temperature routes to transition-metal oxides with the aim of providing rapid means of synthesis. The potential to stabilise metastable phases at low temperatures, not accessible at high temperatures, is a second rationale for performing this work.We propose to investigate the solvothermal synthesis of manganates of the formula Al.,BMn03 (A = rare earth metal such as lanthanum and B = alkaline earth metal such as barium), materials that have attracted a good deal of attention due to the phenomenon of giant magnetoresistance; on application of a magnetic field their electrical resistance changes by several orders of magnitude. The compounds have so far been prepared almost solely by high temperature routes, which can be lengthy and work-intensive. Our aim is to develop a one-step rapid solvothermal route to the manganates; this method offers a huge number of experimental variables, and we intend to optimise these to give a reliable route to the family of compounds.
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