Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin

Three series of charge-ordered compounds Nd0.5Ca0.5Mn1-xCrxO3 (NCMCO) (0≤x≤0.05), Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ (NLCSMO) (0≤y≤0.05) and Dy₀.₅₋zErzBa₀.₅CoO₃ (DEBCO) (0≤z≤0.05) ceramics were prepared using the solid-state reaction method. For NCMCO series, resistivity and susceptibility measurements for th...

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Main Author: Shamsuddin, Suhadir
Format: Book Section
Language:English
Published: Institute of Graduate Studies, UiTM 2015
Subjects:
Online Access:http://ir.uitm.edu.my/id/eprint/19391/
http://ir.uitm.edu.my/id/eprint/19391/1/ABS_SUHADIR%20SHAMSUDDIN%20TDRA%20VOL%207%20IGS%2015.pdf
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spelling uitm-193912018-06-11T06:13:50Z http://ir.uitm.edu.my/id/eprint/19391/ Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin Shamsuddin, Suhadir Malaysia Three series of charge-ordered compounds Nd0.5Ca0.5Mn1-xCrxO3 (NCMCO) (0≤x≤0.05), Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ (NLCSMO) (0≤y≤0.05) and Dy₀.₅₋zErzBa₀.₅CoO₃ (DEBCO) (0≤z≤0.05) ceramics were prepared using the solid-state reaction method. For NCMCO series, resistivity and susceptibility measurements for the x=0 sample showed an insulating behavior and an anti-ferromagnetic (AFM) transition at 230 K as well as a charge-ordering (CO) transition at 280 K. The substitution of Cr induces a ferromagnetic-paramagnetic (FM-PM) and metal-insulator (MI) transition as well as gradually suppressing the CO state due to weakening of the Jahn-Teller (JT) effect. Quenching to reduce the oxygen content of the x=0.05 sample caused the MI transition temperature to shift to lower temperatures most likely due to oxygen reduction. On the other hand, both longitudinal and shear velocities at 100 K increased significantly with Cr substitution indicating improvement in elastic properties. However, quenching of the x=0.05 sample slightly decreased both velocities and related elastic moduli… Institute of Graduate Studies, UiTM 2015 Book Section PeerReviewed text en http://ir.uitm.edu.my/id/eprint/19391/1/ABS_SUHADIR%20SHAMSUDDIN%20TDRA%20VOL%207%20IGS%2015.pdf Shamsuddin, Suhadir (2015) Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin. In: The Doctoral Research Abstracts. IGS Biannual Publication, 7 (7). Institute of Graduate Studies, UiTM, Shah Alam.
repository_type Digital Repository
institution_category Local University
institution Universiti Teknologi MARA
building UiTM Institutional Repository
collection Online Access
language English
topic Malaysia
spellingShingle Malaysia
Shamsuddin, Suhadir
Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin
description Three series of charge-ordered compounds Nd0.5Ca0.5Mn1-xCrxO3 (NCMCO) (0≤x≤0.05), Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ (NLCSMO) (0≤y≤0.05) and Dy₀.₅₋zErzBa₀.₅CoO₃ (DEBCO) (0≤z≤0.05) ceramics were prepared using the solid-state reaction method. For NCMCO series, resistivity and susceptibility measurements for the x=0 sample showed an insulating behavior and an anti-ferromagnetic (AFM) transition at 230 K as well as a charge-ordering (CO) transition at 280 K. The substitution of Cr induces a ferromagnetic-paramagnetic (FM-PM) and metal-insulator (MI) transition as well as gradually suppressing the CO state due to weakening of the Jahn-Teller (JT) effect. Quenching to reduce the oxygen content of the x=0.05 sample caused the MI transition temperature to shift to lower temperatures most likely due to oxygen reduction. On the other hand, both longitudinal and shear velocities at 100 K increased significantly with Cr substitution indicating improvement in elastic properties. However, quenching of the x=0.05 sample slightly decreased both velocities and related elastic moduli…
format Book Section
author Shamsuddin, Suhadir
author_facet Shamsuddin, Suhadir
author_sort Shamsuddin, Suhadir
title Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin
title_short Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin
title_full Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin
title_fullStr Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin
title_full_unstemmed Ultrasonic velocity and elastic anomaly in charge-ordered Nd₀.₅Ca₀.₅Mn₁₋ₓCrₓO₃, Nd₀.₃La₀.₂Ca₀.₅₋ᵧSrᵧMnO₃ and Dy₀.₅₋zErzBa₀.₅CoO₃ magnetic ceramics / Suhadir Shamsuddin
title_sort ultrasonic velocity and elastic anomaly in charge-ordered nd₀.₅ca₀.₅mn₁₋ₓcrₓo₃, nd₀.₃la₀.₂ca₀.₅₋ᵧsrᵧmno₃ and dy₀.₅₋zerzba₀.₅coo₃ magnetic ceramics / suhadir shamsuddin
publisher Institute of Graduate Studies, UiTM
publishDate 2015
url http://ir.uitm.edu.my/id/eprint/19391/
http://ir.uitm.edu.my/id/eprint/19391/1/ABS_SUHADIR%20SHAMSUDDIN%20TDRA%20VOL%207%20IGS%2015.pdf
first_indexed 2023-09-18T23:02:28Z
last_indexed 2023-09-18T23:02:28Z
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