Magnetic phase transition and magnetocaloric effect in Mn1-xZnxCoGe alloys
Abstract
The magnetic phase transition and magnetocaloric effect are studied in a series of Mn1-xZnxCoGe (x = 0.01, 0.02, 0.04, and 0.08) alloys. By introducing a small quantity of Zn element, the structural transformation temperature of the MnCoGe alloy is greatly reduced and a first-order magnetostructural transition is observed. Further increasing the Zn concentration results in a second-order ferromagnetic transition. Large room-temperature magnetocaloric effects with small magnetic hysteresis are obtained in alloys with x = 0.01 and 0.02, which suggests their potential application in magnetic refrigeration.
- Publication:
-
Chinese Physics B
- Pub Date:
- September 2014
- DOI:
- 10.1088/1674-1056/23/9/097502
- Bibcode:
- 2014ChPhB..23i7502S