Phase diagram and anisotropic transport properties of Nd{sub 1{minus}x}Sr{sub x}MnO{sub 3} crystals
- Joint Research Center for Atom Technology, Tsukuba, Ibaraki (Japan)
The authors have investigated electronic transport and magnetic properties of perovskite-type Nd{sub 1{minus}x}Sr{sub x}MnO{sub 3} crystals with change of controlled hole-doping level (0.30 {le} x {le} 0.80). The electronic phase diagram of Nd{sub 1{minus}x}Sr{sub x}MnO{sub 3} was obtained by systematic measurements of magnetization (magnetic structure), resistivity, and lattice parameter. The authors have also studied the anisotropic transport properties of x = 0.50 and 0.55 crystals with different magnetic structures: CE-type antiferromagnetic (AF) structure for x = 0.50 and A-type layered AF one for x = 0.55. In the case of the x = 0.55 crystal, the metallic behavior was observed within the ferromagnetic (F) layers, while along the AF-coupling direction the crystal remains insulating over the whole temperature region. The observed large anisotropy is due to the magnetic as well as orbital-ordering induced confinement of the spin-polarized carriers within the F sheets. The nearly isotropic transport behavior has been confirmed for the CE-type AF charge-ordered state in the x = 0.50 crystal.
- OSTI ID:
- 323398
- Report Number(s):
- CONF-971201-; ISBN 1-55899-399-1; TRN: 99:004229
- Resource Relation:
- Conference: 1997 fall meeting of the Materials Research Society, Boston, MA (United States), 1-5 Dec 1997; Other Information: PBD: 1998; Related Information: Is Part Of Science and technology of magnetic oxides; Hundley, M.F. [ed.] [Los Alamos National Lab., NM (United States)]; Nickel, J.H. [ed.] [Hewlett-Packard Labs., Palo Alto, CA (United States)]; Ramesh, R. [ed.] [Univ. of Maryland, College Park, MA (United States)]; Tokura, Yoshinori [ed.] [Univ. of Tokyo (Japan)]; PB: 375 p.; Materials Research Society symposium proceedings, Volume 494
- Country of Publication:
- United States
- Language:
- English
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