Lee, Kin Hang = (La₀.₆₇Sr₀.₃₃MnO₃/La₀.₄₀Ca₀.₆₀MnO₃)多層薄膜的磁致電阻特性 / 李建恆. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references. / Abstracts in English and Chinese. / Lee, Kin Hang = (La₀.₆₇Sr₀.₃₃MnO₃/La₀.₄₀Ca₀.₆₀MnO₃) duo ceng bo mo de ci zhi dian zu te xing / Li Jianheng. / Chapter Chapter 1 --- Introduction / Chapter 1.1 --- Review of Magnetoresistance --- p.1 / Chapter 1.2 --- Giant magnetoresistance (GMR) --- p.4 / Chapter 1.3 --- Colossal magnetoresistance (CMR) and rare earth manganites --- p.6 / Chapter 1.3.1 --- Tolerance factor in perovskite structure --- p.8 / Chapter 1.3.2 --- Electronic structure and magnetic exchange mechanism --- p.10 / Chapter 1.3.3 --- Jahn-Teller (JT) distortion --- p.13 / Chapter 1.3.4 --- Magnetic and electronic phase diagram --- p.15 / Chapter 1.3.5 --- Charge ordering (CO) effect --- p.18 / Chapter 1.3.6 --- Percolation in a phase-separated state --- p.19 / Chapter 1.4 --- Phase separation at the interfaces in thin films --- p.24 / Chapter 1.5 --- Our motivation --- p.26 / Chapter 1.6 --- Review of manganite multilayer system --- p.27 / Chapter 1.7 --- Scope of this thesis --- p.34 / References --- p.35 / Chapter Chapter 2 --- Instrumentation / Chapter 2.1 --- Thin film deposition --- p.39 / Chapter 2.1.1 --- Facing target sputtering (FTS) --- p.40 / Chapter 2.1.2 --- Vacuum system --- p.43 / Chapter 2.2 --- Characterization --- p.45 / Chapter 2.2.1 --- α-step profilometer --- p.45 / Chapter 2.2.2 --- X-ray diffraction (XRD) --- p.45 / Chapter 2.2.3 --- Resistance measurement --- p.48 / Reference --- p.50 / Chapter Chapter 3 --- Epitaxial growth and characterization of single layer thin films / Chapter 3.1 --- Introduction --- p.51 / Chapter 3.2 --- Fabrication of the sputtering targets --- p.51 / Chapter 3.3 --- Epitaxial growth of single layer thin films --- p.52 / Chapter 3.3.1 --- Substrate materials --- p.52 / Chapter 3.3.2 --- Review of deposition conditions of our group with FTS system --- p.54 / Chapter 3.3.3 --- Substrate temperature --- p.57 / Chapter 3.3.4. --- Target-to-target distance and sputtering power --- p.58 / Chapter 3.3.5 --- Deposition procedures --- p.59 / Chapter 3.3 --- Characterization of single layer thin films --- p.60 / References --- p.64 / Chapter Chapter 4 --- La0.67Sr0.33MnO3/La0.40Ca0.60MnO3 multilayers / Chapter 4.1 --- Sample preparation --- p.65 / Chapter 4.2 --- As-grown multilayers --- p.69 / Chapter 4.2.1 --- Structural characterization of as-grown samples --- p.69 / Chapter 4.2.2 --- Transport properties of as-grown samples --- p.80 / Chapter 4.2.2.1 --- The effect of ts for fixed tc and the effect of tc for fixed ts --- p.83 / Chapter 4.2.2.2 --- The effect of thin La0.40Ca0.60MnO3 spacer layers --- p.92 / Chapter 4.2.2.3 --- The effect of fixed bilayer thickness --- p.94 / Chapter 4.2.2.4 --- The effect of ts for fixed volume fraction (tc / ts) --- p.97 / Chapter 4.2.2.5 --- The sample without M-I transition --- p.101 / Chapter 4.3 --- Discussion --- p.103 / References --- p.108 / Chapter Chapter 5 --- Conclusion --- p.110 / Chapter 5.1 --- Conclusion --- p.110 / Chapter 5.2 --- Future outlook --- p.112 / References --- p.114
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_326471 |
| Date | January 2008 |
| Contributors | Lee, Kin Hang., Chinese University of Hong Kong Graduate School. Division of Physics. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, ix, 114 leaves : ill. ; 30 cm. |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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