THE HANDBOOK ON OPTICAL CONSTANTS OF METALS In Tables and Figures 8479hc.9789814405942-tp.indd 1 11/6/12 9:26 AM TThhiiss ppaaggee iinntteennttiioonnaallllyy lleefftt bbllaannkk THE HANDBOOK ON OPTICAL CONSTANTS OF METALS In Tables and Figures Sadao Adachi Gunma University, Japan World Scientific NEW JERSEY • LONDON • SINGAPORE • BEIJING • SHANGHAI • HONG KONG • TAIPEI • CHENNAI 8479hc.9789814405942-tp.indd 2 11/6/12 9:26 AM Published by World Scientific Publishing Co. Pte. Ltd. 5 Toh Tuck Link, Singapore 596224 USA office: 27 Warren Street, Suite 401-402, Hackensack, NJ 07601 UK office: 57 Shelton Street, Covent Garden, London WC2H 9HE British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. THE HANDBOOK ON OPTICAL CONSTANTS OF METALS In Tables and Figures Copyright © 2012 by World Scientific Publishing Co. Pte. Ltd. All rights reserved. This book, or parts thereof, may not be reproduced in any form or by any means, electronic or mechanical, including photocopying, recording or any information storage and retrieval system now known or to be invented, without written permission from the Publisher. For photocopying of material in this volume, please pay a copying fee through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA. In this case permission to photocopy is not required from the publisher. ISBN 978-981-4405-94-2 Printed in Singapore. Zhihua - The Hdbk of Optical Cons of Metals.pm1d 6/8/2012, 11:51 AM P REFACE Metals and metallic compounds are commonly used in optical systems in three forms: (i) structures, (ii) mirrors and (iii) optical thin films. This book presents data on the optical constants of metal elements (Na, Au, Mg, Hg, Sc, Al, Ti, β-Sn, V, Cr, Mn, Fe, La, Th, etc.), semimetal elements (graphite, Sb, etc.), metallic compounds (TiN, VC, TiSi , CoSi , etc.) and high-temperature superconducting materials (YBa Cu O , 2 2 2 3 7−δ MgB , etc.). A complete set of the optical constants are presented in tabular and 2 graphical forms over the entire photon-energy range. They are: the complex dielectric constant ε(E) = ε(E) + iε(E), the complex refractive index n*(E) = n(E) + ik(E), the 1 2 absorption coefficient α(E) and the normal-incidence reflectivity R(E). Many of these data are of an experimental nature determined at room temperature. The book will aid many who are interested to know the optical constants of the metals, semimetals, metallic compounds and high-temperature superconducting materials in the course of their work. The reader will find the companion book “The Handbook on Optical Constants of Semiconductors” useful since it fully supports knowledge of the optical constants of m any semiconductors used in a wide variety of optical science and engineering. It is my hope that the book will attract attention of not only optical engineers, but also solid-state physicists, materials scientists and particularly students specializing in the fields of optical system and device engineering. Sadao Adachi Bunkyo-cho 2-6-31 Maebashi-shi, Gunma 371-0801 Japan v TThhiiss ppaaggee iinntteennttiioonnaallllyy lleefftt bbllaannkk C ONTENTS Preface v 1 Introduction 1 1.1 Electron Configuration in Atoms 1 1.2 Crystal Structure 4 1.2.1 Metal and Semimetal Elements 4 (a) Metallic bond 4 (b) Body-centered cubic structure 5 (c) Face-centered cubic structure 6 (d) Hexagonal close-packed structure 6 (e) Unusual crystal structure of metals and semimetals 6 1.2.2 Transition-Metal Carbides and Nitrides 7 1.2.3 Metallic Silicides 8 1.2.4 High-T Superconductors 8 c (a) YBa Cu O 8 2 3 7−δ (b) Bi Sr CaCu O 9 2 2 2 8 (c) MgB 9 2 1.3 Dielectric Function: Tensor Representation 9 1.4 Optical Dispersion Relations 11 1.5 Optical Sum Rules 13 1.5.1 Inertial Sum Rule 13 1.5.2 dc-Conductivity Sum Rule 13 vi i viii Contents 1.5.3 f-Sum Rule 14 1.6 Model Dielectric Function 16 1.6.1 Intraband Transitions 16 (a) Lorentz−Drude model 16 (b) Optical constants and electrical conductivity 18 1.6.2 Interband Transitions 19 References 21 2 Metal and Semimetal Elements 23 2.1 Ia Metals 23 2.1.1 Lithium (Li) 24 References 29 2.1.2 Sodium (Na) 29 References 35 2.1.3 Potassium (K) 35 References 41 2.1.4 Rubidium (Rb) 41 References 46 2.1.5 Cesium (Cs) 46 References 53 2.2 Ib Metals 53 2.2.1 Copper (Cu) 54 References 60 2.2.2 Silver (Ag) 61 References 68 2.2.3 Gold (Au) 68 References 77 2.3 IIa Metals 77 2.3.1 Beryllium (Be) 78 References 85 2.3.2 Magnesium (Mg) 85 References 91 2.3.3 Calcium (Ca) 91 References 97 2.3.4 Strontium (Sr) 97 References 102 2.3.5 Barium (Ba) 102 References 108 2.4 IIb Metals 108 2.4.1 Zinc (Zn) 109 References 114 2.4.2 Cadmium (Cd) 115 References 122 2.4.3 Mercury (Hg) 123 References 128 Contents ix 2.5 IIIa Metals 128 2.5.1 Scandium (Sc) 129 References 138 2.5.2 Yttrium (Y) 139 References 153 2.6 IIIb Metals 154 2.6.1 Alminium (Al) 154 Reference 159 2.6.2 Gallium (Ga) 160 References 168 2.6.3 Indium (In) 168 References 177 2.6.4 Thallium (Tl) 177 References 182 2.7 IVa Metals 182 2.7.1 Titanium (Ti) 183 References 189 2.7.2 Zirconium (Zr) 189 References 203 2.7.3 Hafnium (Hf) 203 References 215 2.8 IVb Semimetal and Metal 216 2.8.1 Graphite (C) 216 References 225 2.8.2 White Tin (β-Sn) 225 References 236 2.9 Va Metals 237 2.9.1 Vanadium (V) 237 References 243 2.9.2 Niobium (Nb) 243 References 251 2.9.3 Tantalum (Ta) 252 References 260 2.10 Vb Semimetals 260 2.10.1 Antimony (Sb) 260 References 266 2.10.2 Bismuth (Bi) 266 References 272 2.11 VIa Metals 272 2.11.1 Chromium (Cr) 273 References 279 2.11.2 Molybdenum (Mo) 279 References 287 2.11.3 Tungsten (W) 287 References 297