The structural phase transition in cobalt monocrystals investigated by means of SEM

Magnetic domains on the surface of a cobalt monocrystal are observed by means of the scanning electron microscope (SEM). The change of magnetic domain structure during the martensite transformation is observed. The temperature of martensite transformation is exactely determined because of a relation between the magnetic domain structure and structural phase transitions. The mechanism responsible for the transition between the two different domain structures is discussed. Magnetische Domanen an der Oberflache eines Kobalteinkristalls werden mittels Rasterelektronenmikroskopie (REM) beobachtet. Die Anderung der Struktur der magnetischen Domanpen wahrend des Martensit-Ubergangs wird wegen der Bezichung zwischen der magnetischen Domanenstruktur und den strukturellen Phasenubergangen exakt bestimmt. Der fur den Ubergang zwischen den beiden unterschiedlichen Domanenstrukturen verantwortliche Mechanismus wird diskutiert.