This report was prepared by Hughes Aircraft Company, Culver City, California under Contract No. F33615-70-C-1348. The work was administered under the direction of the Air Force Materials Laboratory, Air Force Systems Cornrnand, Wright-Patterson Air Force Base, Ohio, with Mr. B. Emrich, Project Engineer. The Electronic Properties Information Center (EPIC) is a designated inforrnation Analysis Center of the Departrnent of Defense, authorized to provide inforrnation to the entire DoD cornrnunity. The purpose of the Center is to provide a highly competent source of inforrnation and data on the electronic, optical and magnetic properties of materials of value to the Department of Defense. Its major function is to evaluate, compile and publish the experimental data from the world's unclassified literature concerned with the properties of materials. All materials relevant to the field of electronics are within the scope of EPIC: insulators, semiconductors, metals, superconductors, ferrites, ferroelectrics, ferromagnetics, electro luminescents, therrnionic emitters and optical materials. The Center's scope includes inforrnation on over 100 basic properties of materials; information generally regarded as being in the area of devices and/or circuitry is excluded. Grateful acknowledgement is made for the review and comments of Dr. G. D. Cody of RCA Laboratories and Dr. B. W. Roberts of General Electric Co. V CONTENTS Introduction *. . ****. . . ****. . . . . . ** 1 Superconductivity Applications **** 3 Niobium-Hydrogen *. . **. *. **. **. . ** 15 Niobium-Antimony. * . . . * . * * * * . * * . * * .

The Electronic Properties Information Center has developed the Data Table as a precis of the most reliable information available for the physical, crystallographic, mechanical, thermal, electronic, magnetic and optical properties of a given material. Data Tables serve as an introduction to the graphic data compilations on the material published by the Electronic Properties Information Center, EPIC, as Data Sheets. Although the Data Sheets are principally concerned, according to the scope of the Center, with electronic and optical data, it is believed that data covering the complete property spectrum is of the first importance to every scientist and engineer, whatever his information requirements. The enthusiastic reception of these Data Tables has confirmed this opinion and increasing requests for this highly selective type of information has resulted in these III.-V Semiconductor Compounds Data Tables. The major problem in this type of selective data compilation on a semiconducting material, lies in the material purity. Properties may vary so widely with doping, crystallinity, defects, geometric forms and the other parameters of preparation, that any attempts at comparison normally fail. On this basis, we have consis tently attempted to give values derived from experiments on the highest purity single crystals or epitaxial films. At the very least, these data should be reproducible and this gives the data their principal validity. If such values however, are not available, then the next best data are reported, together with material speci fications. These latter include the carrier concentration and the dopant."

The Electronic Prope~ties Information Cente~ has developed the Data Table as a compilation of the most ~eliable info~mation available fo~ the physical, c~ystallog~aphic, mechanical, thermal, elect~onic, magnetic and optical p~ope~ties of a given mate~ial. Data Tables forme~ly se~ved as an int~oduction to the g~aphic data compilations on the mate~ial published by the Elect~onic ~ope~ties Information Cente~, EPIC, as Data Sheets. Although the Data Sheets we~e p~incipally concerned, according to the scope of the Cente~, with electronic and optical data, it is believed that data cove~ing the complete p~ope~ty spect~um, is of the f~st impo~tance to eve~y scientist and engineer, whateve~ his information requi~ements. The enthusiastic ~eception of these Data Tables has confi~med this opinion and increasing requests fo~ this highly selective type of information ~esulted in the publication of volume 2 in this se~ies, "III-V Semiconducting Compounds" in 1971 and "G~oup IV Semiconducting Compounds", also in 1971. Recent inte~est in the device applications of the te~n~y semiconducto~s, led to the compilation of these Data Tables on the III-V Te~n~y Semiconducting Compounds. The majo~ problem in this type of selective data compilation on a semiconducting mate~ial, lies in the mate~ial specifications. Prope~ties may va~y so widely with doping, c~stallinity, defects, geometric forms and the othe~ pa~amete~s of p~epa~ation, that any attempts at comparison normally fail. On this basis, we have consistently attempted to give the p~epa~ation methods, ca~rier concent~ations, and physical form.

This report was prepared by Hughes Aircraft Company, Culver City, California under Contract Number F33615-70-C-1348. The work was administered under the direc tion of the Air Force Materials Laboratory, Air Force Systems Command, Wright Patterson Air Force Base, Ohio, with Mr. B. Emrich, Project Engineer. The Electronic Properties Information Center (EPIC) is adesignated Information Analysis Center of the Department of Defense, authorized to provide information to the entire DoD community. The purpose of the Center is to provide a highly competent source of information and data on the electronic, optical and magnetic properties of materials of value to the Department of Defense. Its major function is to evaluate, compile and publish the experimental data from the world's unclassified literature concerned with the properties of materials. All materials relevant to the field of electronics are within the scope of EPIC: insulators, semiconductors, metals, super conductors, ferrites, ferroelectrics, ferromagnetics, electroluminescents, thermionic emitters and optical materials. The Center's scope includes information on over 100 basic properties of materials; information gene rally regarded as being in the area of devices and/or circuitry is excluded. Grateful acknowledgement is made for the review and comments by Dr. Victor Rehn of the U. S. Naval Ordnance Test Station at China Lake, California, as weIl as for review by staff members of the National Bureau of Standards, National Standard Data Reference System. v CONTENTS Introduction . *. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Composite Data Table. . . . . . . . . . . . . . . . . . . . . . . . . 5 Diamond. . . . . . . . *. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Bibliography . . . . . . *. . . . . . . . . . . . . . . . . . . . . . . 11 Germanium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Bibliography . . . . . . . . *. . . . . . . . . . . . . . . . . . . . . 28 Silicon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The use of difference matrices and high-level MATLAB (R) commands to implement finite difference algorithms is pedagogically novel. This unique and concise textbook gives the reader easy access and a general ability to use first and second difference matrices to set up and solve linear and nonlinear systems in MATLAB which approximate ordinary and partial differential equations. Prerequisites include a knowledge of basic calculus, linear algebra, and ordinary differential equations. Some knowledge of partial differential equations is a plus though the text may easily serve as a supplement for the student currently working through an introductory PDEs course. Familiarity with MATLAB is not required though a little prior experience with programming would be helpful. In addition to its special focus on solving in MATLAB, the abundance of examples and exercises make this text versatile in use. It would serve well in a graduate course in introductory scientific computing for partial differential equations. With prerequisites mentioned above plus some elementary numerical analysis, most of the material can be covered and many of the exercises assigned in a single semester course. Some of the more challenging exercises make substantial projects and relate to topics from other typical graduate mathematics courses, e.g., linear algebra, differential equations, or topics in nonlinear functional analysis. A selection of the exercises may be assigned as projects throughout the semester. The student will develop the skills to run simulations corresponding to the primarily theoretical course material covered by the instructor. The book can serve as a supplement for the instructor teaching any course in differential equations. Many of the examples can be easily implemented and the resulting simulation demonstrated by the instructor. If the course has a numerical component, a few of the more difficult exercises may be assigned as student projects. Established researchers in theoretical partial differential equations may find this book useful as well, particularly as an introductory guide for their research students. Those unfamiliar with MATLAB can use the material as a reference to quickly develop their own applications in that language. Practical assistance in implementing algorithms in MATLAB can be found in these pages. A mathematician who is new to the practical implementation of methods for scientific computation in general can learn how to implement and execute numerical simulations of differential equations in MATLAB with relative ease by working through a selection of exercises. Additionally, the book can serve as a practical guide in independent study, undergraduate or graduate research experiences, or for reference in simulating solutions to specific thesis or dissertation-related experiments.