Orientational phase transitions in the vicinity of the Curie point in terbium-gadolinium alloys

Journal Article · Fri Jun 01 04:00:00 EDT 1979 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:5713951

Nikitin, S A; Andreenko, A S; Zvezdin, A K; Popkov, A F

By measurements of the magnetization and of the magnetocaloric effect in monocrystals of the rare-earth alloys Tb/sub x/Gd/sub 1-x/ (x<0.94) along various crystallographic directions, it is shown that in the region of the Curie temperature, in a magnetic field directed along an axis of difficult magnetization, a magnetic phase transition of the spin-reorientation type occurs in an anisotropic ferromagnet. The experimental results are discussed on the basis of Landau's thermodynamic theory of phase transitions. By means of the Ginzburg-Levanyuk criterion, the theory is shown to be applicable over a quite broad temperature interval near the Curie point.

• Research Organization: Moscow State University
• OSTI ID: 5713951
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 49:6; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals &amp; Alloys-- Physical Properties
ALLOYS
CRYSTALS
CURIE POINT
GADOLINIUM ALLOYS
MAGNETIZATION
MAGNETO-THERMAL EFFECTS
MONOCRYSTALS
ORIENTATION
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SPIN ORIENTATION
TEMPERATURE EFFECTS
TERBIUM ALLOYS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE