High field investigation on the ferrimagnetic systems GdCo_9−xSi_4+x(−0.2 ⩽x⩽ 0.2) and TbCo₉Si₄

Magnetic entropy change in GdCo13−xSix intermetallic compounds

“…Also, ferrimagnetism with ordering temperatures close to 60 K for GdCo 13 À x Si x (3.8rx r4.2) has been reported in Ref. [21]. It is found that the ferrimagnetic magnetization decreases with decrease in Si content which reveals an increasing cobalt sublattice magnetization.…”

“…It is found that the ferrimagnetic magnetization decreases with decrease in Si content which reveals an increasing cobalt sublattice magnetization. The antiparallel coupling of the Gd-and Co-sublattice magnetizations breaks up at low critical fields [21]. Fig.…”

“…Magnetic measurements on polycrystalline GdCo 13 À x Si x compounds reveal ferrimagnetism with ordering temperatures close to 50 K, which was analysed in terms of a two-sublattice molecular field model with a local moment Gd subsystem coupling antiparallel to the itinerant ferromagnetic Co 3d sublattice [20]. Moreover, saturation magnetization decreases with decrease in Si content which reveals an increasing cobalt sublattice magnetization [21]. However, except for PrCo 9 Si 4 and NdCo 9 Si 4 [22], only a few reports are available on the magnetocaloric studies on this series.…”