Critical behavior and magnetic entropy change in La0.7Ca0.3Mn0.9Zn0.1O3 perovskite manganite

DSpace/Manakin Repository

Critical behavior and magnetic entropy change in La0.7Ca0.3Mn0.9Zn0.1O3 perovskite manganite

Show simple item record


dc.contributor.author Phùng, Quốc Thanh
dc.date.accessioned 2011-04-21T03:35:14Z
dc.date.available 2011-04-21T03:35:14Z
dc.date.issued 2011
dc.identifier.citation Current Applied Physics 11 (2011) 830e833 vi
dc.identifier.uri http://hdl.handle.net/123456789/1506
dc.description.abstract We studied the critical behavior and magnetic entropy change in a perovskite-manganite compound of La0.7Ca0.3Mn0.9Zn0.1O3 around its Curie temperature of TC ¼ 206.75 K. Experimental results revealed that the sample exhibited the second-order magnetic phase transition with the exponents b ¼ 0.474 and g ¼ 1.152 close to those expected from the mean-field theory (b ¼ 0.5 and g ¼ 1.0). In the vicinity of TC, the magnetic entropy change DSM reached maximum values of 1.1, 1.7, and 2.7 J/kg K under magneticfield variations of 10, 20, and 35 kOe, respectively. These DSM values are much lower than those reported previously on the parent compound of La0.7Ca0.3MnO3. The nature of this phenomenon is discussed by means of the characteristics of the magnetic phase transition, and critical exponents. vi
dc.description.sponsorship Quỹ Giáo dục Cao học Hàn Quốc (the Korea Foundation for Advanced Studies) & Trung tâm Hỗ trợ Nghiên cứu Châu Á(Asia Research Center, VNU) vi
dc.language.iso en vi
dc.subject Perovskite manganite vi
dc.subject Magnetic entropy vi
dc.subject Critical behavior vi
dc.title Critical behavior and magnetic entropy change in La0.7Ca0.3Mn0.9Zn0.1O3 perovskite manganite vi
dc.type Working Paper vi

Files in this item

Files Size Format View
Current Appl Phys 11 830-833(2011).pdf 842.6Kb PDF View/Open

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Advanced Search

Browse

My Account