Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-03-21
Physics
Condensed Matter
Strongly Correlated Electrons
11 pages, 4 figures, To be published in Pramana-international Journal of Physics
Scientific paper
Mn site is substituted with closed shell ions (Al, Ga. Ti, Zr and a certain combination of Zr and Al) and also with Fe and Ru ions carrying the magnetic moment (S=5/2 and 2 respectively) at a fixed concentration of 5 at. %. Substitution did not change either the crystal symmetry or the oxygen stiochiometry. All substituents were found to suppress both the metal-insulator and ferromagnetic transition temperatures (TP(r) and TC respectively) to varied extents. Two main contributions identified for the suppression are the lattice disorder arising due to difference in the ionic radii (rMn3+-rM) between the substituent (rM) and the Mn3+ ion (rMn3+) and in the case of the substituents carrying a magnetic moment, the type of magnetic coupling between the substituent and that of the neighboring Mn ion.
Lakshmi Seetha L.
Natarajan D. V.
Radhakrishnan T. S.
Sastry Sankara V.
Sridharan V.
No associations
LandOfFree
Mn Site Substitution Of La0.67Ca0.33MnO3 With Closed Shell Ions: Effect on Magnetic Transition Temperature does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mn Site Substitution Of La0.67Ca0.33MnO3 With Closed Shell Ions: Effect on Magnetic Transition Temperature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mn Site Substitution Of La0.67Ca0.33MnO3 With Closed Shell Ions: Effect on Magnetic Transition Temperature will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-664868