Structural, magnetic and magnetocaloric properties of Ni54Mn14Ga27Fe5: the impact of annealing time

Tekgul A., Sarlar K., KÜÇÜK İ.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.144, sa.4, ss.1109-1114, 2021 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 144 Sayı: 4
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s10973-020-09625-8
  • Dergi Adı: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1109-1114
  • Anahtar Kelimeler: Annealing time, Heusler alloys, Magnetocaloric effect
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

The structural, magnetic and magnetocaloric properties of Ni54Mn14Ga27Fe5 Heusler alloy as a function of the annealing time have been investigated. The crystal structures have been characterized through multiphase Rietveld refinement of X-ray diffraction data. The alloys have cubic and the tetragonal structure with a mixed crystal phase at room temperature. In the magnetic measurements, the alloys exhibit the inter-martensitic and ferromagnetic-paramagnetic transition. The saturation magnetization values of the alloys decrease from 46.38 to 44.21 A m(2)kg(-1) as the annealing time is increased. The maximum magnetic entropy change is found to be as 2.8 Jkg(-1) K-1 under 2 T magnetic field.