Details

Autor(en) / Beteiligte

• Perween, Sonam
• Lalita
• Rathi, A.
• Pant, R.P.
• Gahtori, B.
• Babu, P.D.
• Basheed, G.A.

Titel

Successive magnetic transitions with large refrigerant capacity in arc-melted Mn3−xFexSn2 (x = 0.3, 0.7) alloys

Ist Teil von

• Journal of magnetism and magnetic materials, 2022-01, Vol.541, p.1, Article 168466

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2022

Quelle

ScienceDirect

Beschreibungen/Notizen

• This work investigates the magneto-caloric effect and critical behavior in Mn3−xFexSn2 (x = 0.3, 0.7) alloys synthesized by arc melting method. The alloys show two successive second order magnetic phase transitions at TC1≈ 254 K (261 K) and TC2≈ 205 K (185 K), respectively for x = 0.3 (0.7). The modified Arrot plot study around paramagnetic–ferromagnetic transition at TC1 reveals the critical exponent, β = 0.397 (0.378) with long-range of magnetic interactions for x = 0.3 (0.7). Importantly, the magneto-caloric study for x = 0.3 (0.7) gives large refrigerant capacity (RC) of 330 (250) J/kg at 5 T applied magnetic field. The large RC value and two successive magnetic transitions makes these earth abundant-based Mn3−xFexSn2 alloys highly promising for magnetic refrigeration in a wide temperature span. •Pnma type Mn3−xFexSn2 (x = 0.3, 0.7) alloys are firstly successively synthesized by arc melting method.•The critical exponents are confirmed by various methods and found in agreement with each other.•Critical exponent study reveal the long-range of magnetic interactions for alloys.•The refrigerant capacity (RC) is significant for refrigerant applications in wide temperature range.