Abstract
Remarkable changes in magnetic properties due to plastic deformation have been found in Co-rich Co3Ti intermetallic compounds. Measurements of magnetisation as a function of temperature, magnetic field and the degree of plastic deformation have been performed, mainly on a sample containing 22 at.% Ti, using a magnetometer. The spontaneous magnetisation and Curie temperature have been determined from the sigma g2-H/ sigma g plot for several temperatures. The temperature variation of the spontaneous magnetisation in the heavily deformed samples shows unusual behaviour. A quantitative correlation of the magnetisation and the Curie temperature with the degree of cold-rolling has been obtained. A qualitative explanation of the changes in the magnetic properties, taking into consideration the local atomic environment and the anti-phase boundary, is given.
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