Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653321 | Solid State Communications | 2005 | 5 Pages |
Abstract
We report the temperature dependence of susceptibility for various pressures, magnetic fields and constant magnetic field of 5Â T with various pressures on La2â2xSr1+2xMn2O7 single crystal to understand the effectiveness of pressure and magnetic field in altering the magnetic properties. We find that the Curie temperature, Tc, increases under pressure (dTc/dP=10.9Â K/GPa) and it indicates the enhancement of ferromagnetic phase under pressure up to 2Â GPa. The magnetic field dependence of Tc is about 26Â K for 3Â T. The combined effect of pressure and constant magnetic field (5Â T) shows dTc/dP=11.3Â K/GPa and the peak structure is suppressed and broadened. The application of magnetic field of 5Â T realizes 3D spin ordered state below Tc at atmospheric pressure. Both peak structure in Ïc and 3D spin ordered state are suppressed, and changes to 2D-like spin ordered state by increase of pressure. These results reveal that the pressure and the magnetic field are more competitive in altering the magnetic properties of bilayer manganite La1.25Sr1.75Mn2O7 single crystal.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
S. Arumugam, K. Mydeen, Magda Fontes, N. Manivannan, M. Kumaresa Vanji, K.U. RamaTulasi, S.M. Ramos, Elisa Baggio Saitovitch, D. Prabhakaran, A.T. Boothroyd,