Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 387, Issue -, Pages 159-164Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2015.04.005
Keywords
Martensitic structural transition; Metamagnetic transition; MnCoSi; Hexagonal MMX compounds
Funding
- National Natural Science Foundation of China [51301195, 51431009]
- National Basic Research Program of China [2012CB619405]
- Beijing Municipal Science & Technology Commission [Z141100004214004]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2013002]
Ask authors/readers for more resources
The crystal structures, martensitic structural transitions and magnetic properties of MnCo1-xFexSi (0 <= x <= 0.50) alloys were studied by differential scanning calorimetry (DSC), X-ray powder diffraction (XRD) and magnetic measurements. In high-temperature paramagnetic state, the alloys undergo a martensitic structural transitions from the Ni2In-type hexagonal parent phase to the TiNiSi-type orthorhombic martensite. Both the martensitic transition temperature (T-M) and Curie temperatures of martensite (T-C(M)) decrease with increasing Fe content. The introduced Fe atoms establish ferromagnetic (FM) coupling within Fe-6Mn atom configurations and destroy the double spiral antiferromagnetic (AFM) coupling in MnCoSi compound, resulting in a magnetic change in the martensite phase from a spiral AFM state to an FM state. For the alloys with x=0.10, 015 and 0.20, a metamagnetic transition was observed in between the two magnetic states. A magnetostructural phase diagram of MnCo1-xFexSi (0 <= x <= 0.50) alloys was proposed. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available