Investigation of the inverse magnetocaloric effect with the fraction method

Yuce S., KAVAK E., Yildirim O., Bruno N., EMRE Ş. B.

Journal of physics. Condensed matter : an Institute of Physics journal, cilt.35, sa.34, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 34
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1088/1361-648x/acd3ce
  • Dergi Adı: Journal of physics. Condensed matter : an Institute of Physics journal
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, INSPEC, MEDLINE, Metadex, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: magnetic shape memory alloys, martensitic transformation, magnetocaloric effect, inverse magnetocaloric effect, Heusler alloys, PHASE-TRANSFORMATION, HEUSLER, BEHAVIORS, GIANT
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, we examine Ni49Nb1Mn36In14(nom. at.%) magnetic shape memory alloy (MSMA) to illustrate the inverse magnetocaloric effect (MCE) using the fraction method. The magnetic entropy change,ΔSmag, was calculated with both, the fraction method and the thermomagnetic Maxwell relation. Our results demonstrate that there exists a large magnetization difference between field-cooling and field-heating histories in Ni49Nb1Mn36In14(nom. at.%) MSMA, which can be attributed to the pinning of lattice entropy and magnetic entropy, as it is well-known that the temperature and applied magnetic fields have an opposing effect on the total entropy change. In addition, we describe the inverse MCE and the contradictory roles on the total entropy change between the two stimuli via the fraction method.