Effect of local structural distortions on magnetostructural transformation in Mn3SnC

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Dias E., Priolkar K., Das A., Aquilanti G., ÇAKIR Ö., Acet M., ...Daha Fazla

JOURNAL OF PHYSICS D-APPLIED PHYSICS, cilt.48, sa.29, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 29
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1088/0022-3727/48/29/295001
  • Dergi Adı: JOURNAL OF PHYSICS D-APPLIED PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: antiperovskites, EXAFS, neutron diffraction, MAGNETIC ENTROPY CHANGE, MN3GAC
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

In this paper we attempt to understand the different nature of first order magnetic transformation in Mn3SnC as compared to that in Mn3GaC. The transformation in Mn3SnC is close to room temperature (T-t approximate to 280 K) and is associated with a large change in magnetic entropy that makes it a suitable candidate for applications in ferroic cooling. Using a combination of x-ray and neutron diffraction and x-ray absorption fine structure spectroscopy we infer that the magnetic ground state consisting of antiferromagnetic and ferromagnetic Mn atoms is due to structural distortions present in Mn6C octahedra.