Strain, anisotropy and low field magnetoresistance effect in ultrathin manganite films

Conference · Sun Dec 20 04:00:00 EST 1998 · International Journal of Modern Physics B

OSTI ID:6334268

Wang, H S; Li, Q ^[1]

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1. Pennsylvania State Univ., University Park, PA (United States). Dept. of Physics

The authors report low-field magnetoresistance (LFMR) of strained ultrathin Pr[sub 0.67]Sr[sub 0.33]MnO[sub 3] (PSMO) films. They observed very large LFMR, a factor of 7 of resistance change in zero-field-cooled sample at 80 K and 2000 Oe, in ultrathin PSMO films on LaAlO[sub 3] (LAO) (100). Samples with compressive (on LAO), tensile (on SrTiO[sub 3] (100)) and very small strain (on NdGaO[sub 3] (110)) have been studied systematically and remarkable differences were observed. They also observed large LFMR anisotropy between magnetic fields applied parallel and perpendicular to the film surface. The results demonstrated that strain and strain-induced spin scattering can result in large LFMR effect.

• OSTI ID: 6334268
• Report Number(s): CONF-980291--
• Conference Information: Journal Name: International Journal of Modern Physics B Journal Volume: 12:29-31
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
MAGNETIC FIELDS
MAGNETORESISTANCE
MANGANATES
MANGANESE COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
STRAINS
STRONTIUM COMPOUNDS
SUBSTRATES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS