Resistance and thermal expansion anomalous change in Cr-Re and Cr-Os alloys above Neel temperature

Temperature dependences of electric resistance and thermal expansion of alloy series Cr-Re and Cr-Os in the range of ternary points concentration on phase diagrams of magnetic transformations are studied. It is shown, that with the increase in Re and Os concentration in chromium alloys to the concentration of ternary points during their heating above Tsub(N), an anomalous nonlinear to a certain temperature Tsub(l), and above Tsub(l) - a linear change in electric resistance and thermal expansion are observed. The highest anomalies of the properties and values of Tsub(l)-Tsub(N) temperature ranges are observed at the concentration of ternary points. With further increase in Re and Os concentration in the alloys both anomalies and Tsub(l)-Tsub(N) values decrease, but remain higher than those of pure chromium. Such anomalies are explained by the change in magnetic structure and first of all the values of domains, structure of domain boundaries of phase ao.reement with different magnetic order and with the possibility of ferromagnetism microregion formation