Các tính chất từ và hiệu ứng magnetocaloric lớn của trong các hợp chất heusler gốc mn

• Ngôn ngữ: vie
• Ký hiệu phân loại: 530 Physics
• Thông tin xuất bản: Communications in physics, 2013
• Mô tả vật lý: 139-146
• Bộ sưu tập: Metadata
• ID: 484713

Tóm tắt

Magnetic properties and giant magnetocaloric effect (GMCE) of Mn-based Heusler compounds such as Co-Mn-Si, Ni-Mn-Sn, Ni-Mn-Sb have been investigated. The results show that the structure strongly influences on magnetic properties and GMCE of these alloys. The coexistence of ferromagnetic (FM) and antiferromagnetic (AFM) orders is observed. The magnetic phase transitions can be controlled by changing composition and annealing condition of the alloys. GMCEs with large magnitude and wide working temperature range have been obtained on these alloys showing their application potential for magnetic refrigeration technology.