R. Z. Levitin

Magnetic properties and magnetostructural phase transitions in Ni 2 + x Mn 1 − x Ga shape memory alloys

A systematic study of magnetic properties of

Magnetic method of magnetocaloric effect determination in high pulsed magnetic fields

{\mathrm{Ni}}_{2+x}{\mathrm{Mn}}_{1\ensuremath{-}x}\mathrm{Ga}

Influence of the d-electron concentration on the itinerant electron metamagnetism and ferromagnetism in M(Co1-xAlx)2 systems (M = Y, Lu): study of compounds with unvariable crystal cell parameter

(0\ensuremath{\leqslant}x\ensuremath{\leqslant}0.19)

Gd substitutions in the TmCo2 Laves phase: the onset of long-range magnetic order in the itinerant subsystem

Heusler alloys undergoing structural martensite-austenite transformations while in the ferromagnetic state has been performed. From measurements of spontaneous magnetization,

Two magnetic transitions and metamagnetism in the R2BaCuO5 (R = Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb) compounds

{M}_{s}(T)

Faraday effect in Tb3Ga5O12 in a rapidly increasing ultrastrong magnetic field

, jumps

Gigantic increase in the Curie temperature of the R(Co1-xMnx)2 (R: heavy rare earths) systems at small Mn concentrations

\ensuremath{\Delta}M

Magnetic phase transition and the corresponding magnetostriction of intermetallic compounds RMn2Ge2 (R=Sm, Gd)

at structural phase transitions were determined. Virtual Curie temperatures of martensite were estimated from the comparison of magnetization in martensitic and austenitic phases. Both saturation magnetic moments in the ferromagnetic state and effective magnetic moments in paramagnetic state of Mn and Ni atoms were estimated and the influence of delocalization effects on magnetism in these alloys was discussed. The experimental results obtained show that the shift of martensitic transition temperature depends weakly on composition. The values of this shift are in good correspondence with the Clapeyron-Clausius formalism taking into account the experimental data on latent heat at martensite-austenite transformations.

Study of ferrimagnets with negative interaction within one of the sublattices: magnetic phase diagram of Gd1−xLaxMn2Ge2 intermetallic compounds

Abstract A contactless method of magnetocaloric effect measurements is described, based on the comparison of magnetisation curves obtained in adiabatic and isothermal processes. By this method the magnetocaloric effect of paramagnetic garnet Gd3Ga5O12 is studied in pulsed magnetic fields up to 400 kOe.