Published October 2003 | Version v1
Journal article Metadata-only

N-shaped VACh and current oscillations in manganite Sm1-xSrxMnO3

Creators

  • 1. Inst. Fiziki Dagestanskogo Nauchnogo Tsentra RAN, Makhachkala (Russian Federation)

Description

The volt-ampere characteristics (VACh) in the pulse and constant electric (E) and magnetic (H) fields up to 10 kOe by their mutual orientations H parallel E and H perpendicular E are experimentally studied in the Sm1-xSrxMnO3 with the compositions x = 0.425 and x = 0.450 with temperature 77 K. The N-shaped VACh and high-frequency (up to 3 MHz) current oscillations are identified. It is established that the effect of the enormous magnetoresistance in the studied systems is of the threshold character and it smoothly disappears at E → 0

Abstract (Russian)

В образцах Sm1-xSrxMnO3 с составами х = 0.425 и х = 0.450 экспериментально исследованы при температуре 77 К вольт-амперные характеристики (ВАХ) в импульсных и постоянных электрических (Е) и магнитных (Н) полях до 10 кЭ при их взаимных ориентациях Н параллельно Е и Н перпендикулярно Е. Обнаружены N-образные ВАХ и высокочастотные (до 3 МГц) колебания тока. Установлено, что эффект колоссального магнитосопротивления в исследованных системах носит пороговый характер и при Е → 0 плавно исчезает

Additional details

Additional titles

Original title (Russian)
Н-образная VAKh и колебания тока в манганите См

Publishing Information

Journal Title
Pis'ma v Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki
Journal Volume
78
Journal Issue
7-8
Journal Page Range
p. 957-959
ISSN
0370-274X
CODEN
PZETAB

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36037711
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHEMICAL COMPOSITION; ELECTRIC CURRENTS; ELECTRIC FIELDS; MAGNETIC FIELDS; MAGNETORESISTANCE; MANGANESE OXIDES; ORIENTATION; OSCILLATIONS; PULSES; SAMARIUM OXIDES; SOLID SOLUTIONS; STRONTIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CURRENTS; DISPERSIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HOMOGENEOUS MIXTURES; MANGANESE COMPOUNDS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; SOLUTIONS; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
15 refs., 2 figs.