The birth of this monograph is partly due to the persistent efforts of
the General Editor, Dr. Klaus Timmerhaus, to persuade the authors that
they encapsulate their forty or fifty years of struggle with the thermal
properties of materials into a book before they either expired or became
totally senile. We recognize his wisdom in wanting a monograph which
includes the closely linked properties of heat capacity and thermal
expansion, to which we have added a little 'cement' in the form of
elastic moduli. There seems to be a dearth of practitioners in these
areas, particularly among physics postgraduate students, sometimes
temporarily alleviated when a new generation of exciting materials are
found, be they heavy fermion compounds, high- temperature
superconductors, or fullerenes. And yet the needs of the space industry,
telecommunications, energy conservation, astronomy, medical imaging,
etc., place demands for more data and understanding of these properties
for all classes of materials - metals, polymers, glasses, ceramics, and
mixtures thereof. There have been many useful books, including Specific
Heats at Low Tempera- tures by E. S. Raja Gopal (1966) in this Plenum
Cryogenic Monograph Series, but few if any that covered these related
topics in one book in a fashion designed to help the cryogenic engineer
and cryophysicist. We hope that the introductory chapter will widen the
horizons of many without a solid state background but with a general
interest in physics and materials.