Giant Magnetocaloric Effect in Ce-doped GdCrO3
Analysis
This paper investigates the effect of Cerium (Ce) doping on the magnetic and phonon properties of Gadolinium Chromite (GdCrO3). The key finding is a significant enhancement of the magnetocaloric effect, making the material potentially useful for magnetic refrigeration. The study explores the interplay between spin-orbit coupling, spin-phonon coupling, and magnetic ordering, providing insights into the underlying physics.
Key Takeaways
- •Ce doping in GdCrO3 leads to a giant magnetocaloric effect.
- •The spin-flip transition and spin reorientation are modified by Ce incorporation.
- •Strong spin-phonon coupling is observed, influencing the vibrational modes.
- •The material shows potential for magnetic refrigeration applications.
Reference
“The substituted compound Gd$_{0.9}$Ce$_{0.1}$CrO$_3$ (GCCO) exhibits a remarkably large magnetic entropy change, $Δ$ S $\sim$ 45-40 J/kg-K for $Δ$ H = 90-70 kOe at 3 K among the highest reported for rare-earth orthochromites.”