Electronic Structure and Spontaneous Magnetization in Mn-doped SnO2
- Electronic Structure and Spontaneous Magnetization in Mn-doped SnO2
- 채근화; Rezq Naji Aljawfi; Mahmoud Abu-Samak; Mohammed A. Swillam; Shalendra Kumar; John A. McLeod
- Electronic structure; magnetization; Mn-doped SnO2; dilute magnetic semiconductor; density functional theory
- Issue Date
- Journal of applied physics
- VOL 128-045705
- Mn-doped SnO2 is a promising dilute magnetic semiconductor; however, there are many inconsistent reports on the magnetic ordering in the literature. We investigate the magnetic ordering and the local electronic structure in stoichiometric and Mn-doped (with Mn concentrations of 1 at.%, 3 at.%, and 6 at.%) SnO2 using magnetization measurements, Mn L2,3-edge and O K-edge x-ray absorption fine structure measurements, and density functional theory and model Hamiltonian calculations. We find that paramagnetic and ferromagnetic behavior is present as a function of Mn concentration and, in particular, that paramagnetic, ferromagnetic, and antiferromagnetic order coexist independently in Mn(6%):SnO2. Simultaneously, we find that Mn2þ, Mn3þ, and Mn4þ also coexist in Mn(6%):SnO2. These findings demonstrate the care needed to study Mn:SnO2 and point to the wealth of magnetic behaviors that might be realized with careful control of synthesis conditions.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.