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Sintesis dan karakterisasi La1-xCaxMn1-yCuyO3 sebagai bahan giant magnetoresistance dengan berbagai variasi x dan y = Synthesis and characterization La1-xCaxMn1-yCuyO3 as a matter giant magnetoresistence with the variation x and y

Main Authors: Yohanes Edi Gunanto, author, Add author: Soehardjo Poertadji, promotor, Add author: Budhy Kurniawan, co-promotor, Add author: Adi Basukriadi, examiner, Add author: Bambang Soegijono, examiner, Add author: Yohanes Surya, examiner, Add author: Agus Purwanto, examiner, Add author: Muhammad Aziz Majidi, examiner
Format: Doctoral Bachelors
Terbitan: , 2009
Subjects:
Giant magnetoresistance
Orthorhombic
Online Access: https://lib.ui.ac.id/detail?id=20277875
ctrlnum 20277875
fullrecord <?xml version="1.0"?> <dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><type>Thesis:Doctoral</type><title>Sintesis dan karakterisasi La1-xCaxMn1-yCuyO3 sebagai bahan giant magnetoresistance dengan berbagai variasi x dan y = Synthesis and characterization La1-xCaxMn1-yCuyO3 as a matter giant magnetoresistence with the variation x and y</title><creator>Yohanes Edi Gunanto, author</creator><creator>Add author: Soehardjo Poertadji, promotor</creator><creator>Add author: Budhy Kurniawan, co-promotor</creator><creator>Add author: Adi Basukriadi, examiner</creator><creator>Add author: Bambang Soegijono, examiner</creator><creator>Add author: Yohanes Surya, examiner</creator><creator>Add author: Agus Purwanto, examiner</creator><creator>Add author: Muhammad Aziz Majidi, examiner</creator><publisher/><date>2009</date><subject>Giant magnetoresistance</subject><subject>Orthorhombic</subject><description>&lt;b&gt;ABSTRAK&lt;/b&gt;&lt;br&gt; Thesis ini menyajikan hasil penelitian eksperimen tentang struktur, besaran magnet, specific heat dan giant magnetoresistance dari sampel polikristal manganat tanah jarang seri LaI-XCaxMni-yCuyO3 dengan x = 0,1 ; 0,47 dan 0,73 dan 0 &lt; y &lt; 0,l9. Sampel disiapkan dengan metode reaksi zat padat. Analisis struktur menggunakan difraksi sinar-x dan high resolution powder diffraction (HRPD) dengan program fullprof. Semua sampel mempunyai struktur orthorhombic dengan space group Pnma. Pada suhu kamar semua sampel bersifat paramagnetik dan berubah campuran antara antiferromagnetik (AFM) dengan ferromagnetik (FM) pada suhu rendah dan juga akibat adanya medan magnet luar. Pendopingan Cu pada posisi Mn mengakibatkan menurunnya momen magnet pg. Besaran specific heat pada suhu rendah didominasi oleh faktor charge carriers (70, sedangkan faktor kisi B kcnstan, sementara faktor spin wave-nya diabaikan. Sifat giant magnetoresistance (GMR) pads suhu ruang menunjukkan bahwa pendopingan Cu pada Mn mengakibatkan menurunnya nilai magnetoresistansinya. Semakin tinggi nilai medan magnet luar, maka nilai magnetoresistensinya juga semakin naik. &lt;hr&gt; &lt;b&gt;ABSTRACT&lt;/b&gt;&lt;br&gt; This thesis presents result of an experimental study on structure, magnetic properties, specific heat and giant magnetoresistance of polychrystal samples manganese rare-earth series LaI-XCaxMni-yCuyO3 with x = 0.1; 0.5, and 0.9 and y = 0; 0.05; 0.l0; 0.15, and 0.20. All samples by solid state reaction. The structure analysis use x-ray diffraction and high resolution powder diffraction with fullprof program. The structure of all samples are orthorhombic with space group Pnma. At room temperature all samples are paramagnetic and change became ferromagnetic at low temperature and consecuence external magnetic field too. The doping Cu at Mn site makes decrease the moment magnetic. The specific heat at low temperature, upon increasing the Cu dopant, the y and therefore the charge carriers increase. The specific heat for all samples are insensitive to the external magnetic field up to 9 T. The presence of external magnetic field has no influence on the p value for samples with and without Cu dopant. At room temperature, the doping of Cu at Mn makes decrease the magnetoresistance. The increasing external magnetic field, the magnetoresistance are increasing to.&lt;/i&gt;</description><identifier>https://lib.ui.ac.id/detail?id=20277875</identifier><recordID>20277875</recordID></dc>
format Thesis:Doctoral
Thesis
Thesis:Bachelors
author Yohanes Edi Gunanto, author
Add author: Soehardjo Poertadji, promotor
Add author: Budhy Kurniawan, co-promotor
Add author: Adi Basukriadi, examiner
Add author: Bambang Soegijono, examiner
Add author: Yohanes Surya, examiner
Add author: Agus Purwanto, examiner
Add author: Muhammad Aziz Majidi, examiner
title Sintesis dan karakterisasi La1-xCaxMn1-yCuyO3 sebagai bahan giant magnetoresistance dengan berbagai variasi x dan y = Synthesis and characterization La1-xCaxMn1-yCuyO3 as a matter giant magnetoresistence with the variation x and y
publishDate 2009
topic Giant magnetoresistance
Orthorhombic
url https://lib.ui.ac.id/detail?id=20277875
contents <b>ABSTRAK</b><br> Thesis ini menyajikan hasil penelitian eksperimen tentang struktur, besaran magnet, specific heat dan giant magnetoresistance dari sampel polikristal manganat tanah jarang seri LaI-XCaxMni-yCuyO3 dengan x = 0,1 ; 0,47 dan 0,73 dan 0 < y < 0,l9. Sampel disiapkan dengan metode reaksi zat padat. Analisis struktur menggunakan difraksi sinar-x dan high resolution powder diffraction (HRPD) dengan program fullprof. Semua sampel mempunyai struktur orthorhombic dengan space group Pnma. Pada suhu kamar semua sampel bersifat paramagnetik dan berubah campuran antara antiferromagnetik (AFM) dengan ferromagnetik (FM) pada suhu rendah dan juga akibat adanya medan magnet luar. Pendopingan Cu pada posisi Mn mengakibatkan menurunnya momen magnet pg. Besaran specific heat pada suhu rendah didominasi oleh faktor charge carriers (70, sedangkan faktor kisi B kcnstan, sementara faktor spin wave-nya diabaikan. Sifat giant magnetoresistance (GMR) pads suhu ruang menunjukkan bahwa pendopingan Cu pada Mn mengakibatkan menurunnya nilai magnetoresistansinya. Semakin tinggi nilai medan magnet luar, maka nilai magnetoresistensinya juga semakin naik. <hr> <b>ABSTRACT</b><br> This thesis presents result of an experimental study on structure, magnetic properties, specific heat and giant magnetoresistance of polychrystal samples manganese rare-earth series LaI-XCaxMni-yCuyO3 with x = 0.1; 0.5, and 0.9 and y = 0; 0.05; 0.l0; 0.15, and 0.20. All samples by solid state reaction. The structure analysis use x-ray diffraction and high resolution powder diffraction with fullprof program. The structure of all samples are orthorhombic with space group Pnma. At room temperature all samples are paramagnetic and change became ferromagnetic at low temperature and consecuence external magnetic field too. The doping Cu at Mn site makes decrease the moment magnetic. The specific heat at low temperature, upon increasing the Cu dopant, the y and therefore the charge carriers increase. The specific heat for all samples are insensitive to the external magnetic field up to 9 T. The presence of external magnetic field has no influence on the p value for samples with and without Cu dopant. At room temperature, the doping of Cu at Mn makes decrease the magnetoresistance. The increasing external magnetic field, the magnetoresistance are increasing to.</i>
id IOS18064.20277875
institution Universitas Indonesia
institution_id 51
institution_type library:university
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library Perpustakaan Universitas Indonesia
library_id 492
collection Repository Skripsi (open) Universitas Indonesia
repository_id 18064
city KOTA DEPOK
province JAWA BARAT
repoId IOS18064
first_indexed 2022-12-13T08:52:03Z
last_indexed 2022-12-13T08:52:03Z
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