1 / 2

Magnetic behavior of various Mn 1 −x Sn x Bi 2 Se 4 samples.

Chemical Manipulation of Magnetic Ordering in Mn 1-x Sn x Bi 2 Se 4 Solid-Solutions Pierre F. Poudeu , University of Michigan Ann Arbor, DMR 1237550.

mohammad-rojas
Download Presentation

Magnetic behavior of various Mn 1 −x Sn x Bi 2 Se 4 samples.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemical Manipulation of Magnetic Ordering in Mn1-xSnxBi2Se4 Solid-Solutions Pierre F. Poudeu, University of Michigan Ann Arbor, DMR 1237550 Our investigation of the atomic structure and magnetism in the solid-solution series, Mn1-xSnxBi2Se4 (x = 0, 0.3, 0.75), revealed that although gradual Mn to Sn substitution within the Mn1-xSnxBi2Se4 series maintains the crystal structure as essentially unchanged, the magnetic behavior of the resulting material strongly depends on the distribution of the remaining Mn atoms throughout the various metal positions in the crystal structure. The dominant magnetic ordering within the Mn1-xSnxBi2Se4 solid-solutions below 50K, switches from antiferromagnetic (AFM) for MnBi2Se4 (x = 0), to ferromagnetic (FM) for Mn0.7Sn0.3Bi2Se4 (x = 0.3), and finally to paramagnetic (PM) for Mn0.25Sn0.75Bi2Se4 (x = 0.75). [1] Ranmohotti; Djieutedjeu; Poudeu; J. Amer. Chem. Soc., 2012, accepted. Graphical representation of crystal structure of Mn1−xSnxBi2Se4 ((A) x = 0; (C) x = 0.75) projected along [010] and geometrical details of the {Mn}nSe4n+2single magnetic chain . Magnetic behavior of various Mn1−xSnxBi2Se4samples.

  2. Chemical Manipulation of Magnetic Ordering in Mn1-xSnxBi2Se4 Solid-SolutionsPierre F. Poudeu, University of Michigan Ann Arbor, DMR 1237550 Our laboratory provides outstanding training on solid-state synthesis, structural characterization and evaluation of the electronic, thermal and magnetic properties, to undergraduate students, graduate students and postdoctoral research associate from various social groups involve in this research project. This year, one female African-American undergraduate student from Hope college (Michigan), RaisaYewah, and a white male undergraduate student from the University of Michigan were heavily involved in the synthesis and characterization of new ferromagnetic semiconducting phases relevant to the project. In addition, one postdoctoral researcher and one graduate student (African American) were also supported by this award. Honore (G) Jeremy (UG) Raisa (UG) Pranati (G) Erica (G) Research training of undergraduate (UG) students and Graduate (G) students in Poudeu group (2011- 2012).

More Related