Open AccessLeft-handed properties of manganite-perovskites La 1-x Sr x MnO 3 at various dopant concentrations
Author(s) -
D. P. Belozorov,
Aleksey Girich,
S. I. Tarapov,
A. M. Pogorily,
A. I. Tovstolytkin,
А. Г. Белоус,
Sergii Solopan
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4869310
Subject(s) - dopant , manganite , lanthanum manganite , curie temperature , materials science , doping , perovskite (structure) , condensed matter physics , ceramic , ferromagnetism , curie , analytical chemistry (journal) , mineralogy , chemistry , metallurgy , crystallography , optoelectronics , physics , electrode , chromatography , electrolyte
The experimental study of Double Negative (DNG) state of electromagnetic wave propagating in lanthanum manganite-perovskites doped with strontium La1-xSrxMnO3 is provided firstly below individual Curie temperatures (in ferromagnetic metal state (FM) for La1-xSrxMnO3). Various dopant concentrations are considered for ceramic specimens: x = 0.15; 0.225; 0.3; 0.45; 0.6. It is shown that dependence of the DNG-peak intensity on dopant concentration is sharply non-monotone with maximum at the dopant concentrations x = 0.225 – 0.3. This behaviour follows the change of Curie temperature with increase of dopant concentration in such substances. The obtained dependence of DNG peak intensity supports the opinion concerning the role of disorder in highly doped manganite-perovskite magnetic ceramics under study
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom