Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies

Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies

On-line measurements of ultrasonic longitudinal velocity, shear velocity and longitudinal attenuation were carried out on R1-xSr xMnO3 perovskites (R = La, Pr, Nd and Sm) for different compositions of Sr, at a fundamental frequency of 5 MHz over wide range of temperatures using the through-transmiss...

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Main Authors: Sundararaman Sankarrajan, Kathiresan Sakthipandi, Venkatachalam Rajendran
Format: Article
Language:English
Published: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2012-08-01
Series:Materials Research
Subjects:
perovskite
magnetic materials
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000400006
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spelling doaj-cbdf8b9689d94b719e044a6da75592912020-11-25T00:32:42ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392012-08-01154517521Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studiesSundararaman SankarrajanKathiresan SakthipandiVenkatachalam RajendranOn-line measurements of ultrasonic longitudinal velocity, shear velocity and longitudinal attenuation were carried out on R1-xSr xMnO3 perovskites (R = La, Pr, Nd and Sm) for different compositions of Sr, at a fundamental frequency of 5 MHz over wide range of temperatures using the through-transmission method. The observed maxima/minima in velocities and attenuation have been discussed with decrease in ionic radii and composition. As a decrease in the ionic radii of rare earth elements leads to a decrease in transition temperature (Tc), the results that are observed show that measurement is one of the best tools to explore the structural/phase transition on-line velocity in perovskite manganese materials as a function of the ionic radii of rare earth elements.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000400006perovskitemagnetic materials
collection DOAJ
language English
format Article
sources DOAJ
author Sundararaman Sankarrajan
Kathiresan Sakthipandi
Venkatachalam Rajendran
spellingShingle Sundararaman Sankarrajan
Kathiresan Sakthipandi
Venkatachalam Rajendran
Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
Materials Research
perovskite
magnetic materials
author_facet Sundararaman Sankarrajan
Kathiresan Sakthipandi
Venkatachalam Rajendran
author_sort Sundararaman Sankarrajan
title Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
title_short Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
title_full Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
title_fullStr Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
title_full_unstemmed Effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
title_sort effect of rare earth ions on transition temperature in perovskite materials by on-line ultrasonic studies
publisher Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
series Materials Research
issn 1516-1439
publishDate 2012-08-01
description On-line measurements of ultrasonic longitudinal velocity, shear velocity and longitudinal attenuation were carried out on R1-xSr xMnO3 perovskites (R = La, Pr, Nd and Sm) for different compositions of Sr, at a fundamental frequency of 5 MHz over wide range of temperatures using the through-transmission method. The observed maxima/minima in velocities and attenuation have been discussed with decrease in ionic radii and composition. As a decrease in the ionic radii of rare earth elements leads to a decrease in transition temperature (Tc), the results that are observed show that measurement is one of the best tools to explore the structural/phase transition on-line velocity in perovskite manganese materials as a function of the ionic radii of rare earth elements.
topic perovskite
magnetic materials
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000400006
work_keys_str_mv AT sundararamansankarrajan effectofrareearthionsontransitiontemperatureinperovskitematerialsbyonlineultrasonicstudies
AT kathiresansakthipandi effectofrareearthionsontransitiontemperatureinperovskitematerialsbyonlineultrasonicstudies
AT venkatachalamrajendran effectofrareearthionsontransitiontemperatureinperovskitematerialsbyonlineultrasonicstudies
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