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Influence of Sr Content on CMR Effect in Polycrystalline La_{1-x}Sr_{x}MnO_{3} Thin Films

100%

Žurauskienė N., Balevičius S., Stankevič V., Paršeliūnas J., Keršulis S., Abrutis A., Plaušinaitienė V.

Acta Physica Polonica A

2009

vol. 115

issue 6

1136-1138

The magnetoresistance of thin polycrystalline La_{1-x}Sr_{x}MnO_{3} films deposited on lucalox substrate using metal organic chemical vapor deposition technique was investigated in pulsed magnetic fields up to 18 T in the temperature range 100-320 K. The influence of film preparation conditions, ambient temperature variation and Sr content is analyzed in order to determine the optimal conditions for the design of CMR-B-scalar magnetic field sensor based on thin manganite film, operating at room temperature.

Magneto- and Electroresistance of Ultrathin Anisotropically Strained La-Sr-MnO Films

84%

Balevičius S., Stankevič V., Žurauskienė N., Šimkevičius Č., Paršeliūnas J., Cimmperman P., Abrutis A., Plaušinaitienė V.

Acta Physica Polonica A

2005

vol. 107

issue 1

203-206

The magnetoresistance anisotropy of ultrathin La_{0.83}Sr_{0.17}Mn O_3 films deposited on NdGaO_3 substrate by metalorganic chemical vapour deposition technique was investigated. The electric-field-induced resistance change was studied up to electric fields of 10 kV/cm using ns duration electrical pulses. It was found that in ultrathin (< 10 nm) and thin (< 50 nm) films the origin of electric-field-induced resistance change is thermal. However, the films with thicknesses of about 20 nm, exhibit negative electric-field-induced resistance change, having a pure electronic nature. This effect is explained in terms of two-layer systems with imperfections located at the interface between the layers.

Electroresistance of La-Ca-MnO Thin Films

84%

Cimmperman P., Stankevič V., Žurauskienė N., Balevičius S., Anisimovas F., Paršeliūnas J., Kiprijanovič O., Altgilbers L.

Acta Physica Polonica A

2004

vol. 105

issue 1-2

107-114

Epitaxial, textured, and polycrystalline La_{0.7}Ca_{0.3}Mn O_3 films, having about 150 nm thickness, were prepared by pulsed laser deposition techniques onto (110) NdGaO_3, MgO and lucalox substrates and investigated using 10 ns duration, 0.5 ns rise time electrical pulses having amplitude up to 500 V. Electroresistance of the films [R(E)-R(0)]/R(0) was investigated up to 80 kV/cm electric field strengths in temperatures ranging from 300 K to 4.2 K. Strong (up to 93%) negative electroresistance was obtained in polycrystalline La_{0.7}Ca_{0.3}MnO_3 films prepared on MgO and lucalox substrates. The epitaxial films grown on NdGaO_3 substrate demonstrated only a small resistance change due to Joule heating induced by a current pulse. It was concluded that electroresistance manifests itself in strongly inhomogeneous manganites films exhibiting a large number of structural imperfections producing ferromagnetic tunnel junction nets.

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3 Acta Physica Polonica A

1 2009

1 2005

1 2004

3 Balevičius S.

3 Paršeliūnas J.

3 Stankevič V.

3 Žurauskienė N.

2 Abrutis A.

2 Cimmperman P.

2 Plaušinaitienė V.

1 Altgilbers L.

1 Anisimovas F.

1 Keršulis S.

1 Kiprijanovič O.

1 Šimkevičius Č.

Search results

Influence of Sr Content on CMR Effect in Polycrystalline La_{1-x}Sr_{x}MnO_{3} Thin Films

Magneto- and Electroresistance of Ultrathin Anisotropically Strained La-Sr-MnO Films

Electroresistance of La-Ca-MnO Thin Films