Left-handed properties of manganite-perovskites La1-xSrxMnO3 at various dopant concentrations

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 a...

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Published in:AIP advances 2014-03, Vol.4 (3), p.037116-037116-7
Main Authors: Belozorov, D P, Girich, A A, Tarapov, S I, Pogorily, A M, Tovstolytkin, A I, Belous, A G, Solopan, S A
Format: Article
Language:English
Subjects:
Curie temperature
Dependence
Dopants
Electromagnetic radiation
Ferromagnetism
Lanthanum
Lanthanum compounds
Manganites
Perovskites
Wave propagation
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container_issue 3
container_start_page 037116
container_title AIP advances
container_volume 4
creator Belozorov, D P
Girich, A A
Tarapov, S I
Pogorily, A M
Tovstolytkin, A I
Belous, A G
Solopan, S A
description 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.
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subjects Curie temperature
Dependence
Dopants
Electromagnetic radiation
Ferromagnetism
Lanthanum
Lanthanum compounds
Manganites
Perovskites
Wave propagation
title Left-handed properties of manganite-perovskites La1-xSrxMnO3 at various dopant concentrations
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