Journal
CHINESE PHYSICS B
Volume 20, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/20/8/087502
Keywords
Mn/Co ratio; magnetic transition; magnetocaloric properties; magnetic hysteresis losses
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Funding
- National Natural Science Foundation of China [50701022, 51001019, 50831006]
- Program for New Century Excellent Talents of China [NCET-08-0278]
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We have investigated the magnetic transition and magnetocaloric effects of Mn1+xCo1-xGe alloys by tuning the ratio of Mn/Co. With increasing Mn content, a series of first-order magnetostructural transitions from ferromagnetic to paramagnetic states with large changes of magnetization are observed at room temperature. Further increasing the content of Mn (x = 0.11) gives rise to a single second-order magnetic transition. Interestingly, large low-field magnetic entropy changes with almost zero magnetic hysteresis are observed in these alloys. The effects of Mn/Co ratio on magnetic transition and magnetocaloric effects are discussed in this paper.
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