Ay. Babkevich et al., SEGREGATIONS IN DISORDERED CLOSE-PACKED STRUCTURES AND RELATED DIFFUSE-SCATTERING IN COBALT AND COBALT ALLOYS .2. APPLICATION TO COBALT, Philosophical magazine. A. Physics of condensed matter. Defects and mechanical properties, 72(5), 1995, pp. 1341-1349
X-ray and neutron measurements of diffuse intensity have been carried
out on cobalt single crystals of different origins from room temperatu
re up to 500 degrees C. 'Pure' Co neutron experiments revealed unusual
satellite reflections along the 00.L reciprocal lattice row in the h.
c.p.-f.c.c. martensitic transformation temperature regime (thus confir
ming results published recently), and also at room temperature. In Co
with 0.25 wt% C, the satellite scattering was also observed by X-rays.
An explanation is given on the basis of distribution of segregations
of dilute (impurity) atoms. This is an alternative interpretation of t
he satellite scattering not related to pretransitional phenomena of th
e martensitic transformation in Co.