Narrow transitional hysteresis in (Mn -Cr-Co)(2)Sb pnictides for room-temperature magnetic refrigeration


Tekgul A., Acet M., Scheibel F., Farle M.

JOURNAL OF PHYSICS D-APPLIED PHYSICS, vol.52, no.15, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 15
  • Publication Date: 2019
  • Doi Number: 10.1088/1361-6463/ab026e
  • Title of Journal : JOURNAL OF PHYSICS D-APPLIED PHYSICS

Abstract

Mn1.96-xCrxCo0.04Sb with x = 0.05 and 0.09 has been investigated for its magnetocaloric properties using structural, magnetization and calorimetric methods. These compounds exhibit an antiferromagnetic-ferrimagnetic transition of which the temperature can be adjusted by the Cr concentration. The transition temperature is at room temperature for x = 0.09. Magnetocaloric properties are presented as entropy-change and direct temperature-change. We show that these compounds have a narrow transitional hysteresis and exhibit the inverse magnetocaloric effect. We find a nearly hysteresis-free transition with a 2.6 K temperature-change around 287 K making it attractive for magnetic-cooling.