Tuning the giant inverse magnetocaloric effect in Mn2-xCrxSb compounds

Autor(es)

Caron, L. ^{[1, 2]} ; Miao, X. F. ^[2] ; Klaasse, J. C. P. ^[3] ; Gama, S. ^{[1, 4]} ; Bruck, E. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

^[2] Delft Univ Technol, Fac Sci Appl, Fundamental Aspects Mat & Energy, NL-2629 JB Delft - Netherlands

^[3] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1098 XH Amsterdam - Netherlands

^[4] Univ Estadual Sao Paulo Unifesp, Dept Ciencias Exatas & Terra, BR-09972270 Diadema - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Physics Letters; v. 103, n. 11 SEP 9 2013.
• Citações Web of Science: 42

Resumo

Structural, magnetic, and magnetocaloric properties of Mn2-xCrxSb compounds have been studied. In these compounds, a first order magnetic phase transition from the ferrimagnetic to the antiferromagnetic state occurs with decreasing temperature, giving rise to giant inverse magnetocaloric effects that can be tuned over a wide temperature interval through changes in substitution concentration. Entropy changes as high as 7.5 J/kgK have been observed, and a composition independent entropy change is obtained for several different concentrations/working temperatures, making these compounds suitable candidates for a composite working material. (C) 2013 AIP Publishing LLC. (AU)

• Processo FAPESP: 03/12604-6 - Estudo do efeito magnetocalórico em compostos derivados da fase Mn2a, a=N, P, As, Sb e Bi
• Beneficiário: Luana Caron
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto