Irreversible structure change of the as prepared FeMnP1−xSix-structure on the initial cooling through the curie temperature
2015 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, Vol. 374, 455-458 p.Article in journal (Refereed) Published
FeMnP0.75Si0.25 experiences a first order para- to ferromagnetic transition at about 200 K. In common with some other alloy compositions crystallizing in the Fe2P structure, the magnetic transition of the as prepared alloy occurs at a lower temperature than on subsequent cooling events. This virgin effect is found to be accompanied by a magnetostrictively induced irreversible structure change that persists on succeeding cooling heating cycles. These findings provide means to understand and control the thermal hysteresis of the (Fe1-xMnx)(2)P1-ySiy alloy system which is a promising material class for use in magnetocaloric refrigerators.
Place, publisher, year, edition, pages
2015. Vol. 374, 455-458 p.
FeMnP0.75Si0.25, First order ferromagnetic transition, Thermal hysteresis, Virgin effect, X-ray powder diffraction, Magnetocalorics
Inorganic Chemistry Engineering and Technology
Research subject Chemistry with specialization in Inorganic Chemistry; Engineering Science with specialization in Solid State Physics
IdentifiersURN: urn:nbn:se:uu:diva-233462DOI: 10.1016/j.jmmm.2014.08.088ISI: 000344949000073OAI: oai:DiVA.org:uu-233462DiVA: diva2:753308
FunderSwedish Research Council