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Incommensurate systems

Robert Blinc

in Advanced Ferroelectricity

Published in print:
2011
Published Online:
January 2012
ISBN:
9780199570942
eISBN:
9780191728631
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570942.003.0002
Subject:
Physics, Condensed Matter Physics / Materials

Incommensurate systems show long‐range order, but lack translational periodicity. They cannot be described within the three‐dimensional lattice space groups. In these systems a local atomic property ... More


Magnetic structures

Erich H. Kisi and Christopher J. Howard

in Applications of Neutron Powder Diffraction

Published in print:
2008
Published Online:
January 2009
ISBN:
9780198515944
eISBN:
9780191705663
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198515944.003.0007
Subject:
Physics, Condensed Matter Physics / Materials

This chapter opens with a brief description of the very wide variety of magnetically ordered structures, both commensurate (with crystal structure) and incommensurate. The concepts of magnetic ... More


Structure

Ted Janssen, Gervais Chapuis, and Marc de Boissieu

in Aperiodic Crystals: From Modulated Phases to Quasicrystals: Structure and Properties

Published in print:
2018
Published Online:
August 2018
ISBN:
9780198824442
eISBN:
9780191863288
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198824442.003.0004
Subject:
Physics, Crystallography: Physics, Condensed Matter Physics / Materials

This chapter discusses the X-ray and neutron diffraction methods used to study the atomic structures of aperiodic crystals, addressing indexing diffraction patterns, superspace, ab initio methods, ... More


Lattice-induced strain

I. David Brown

in The Chemical Bond in Inorganic Chemistry: The Bond Valence Model

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199298815
eISBN:
9780191708879
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199298815.003.0012
Subject:
Physics, Crystallography: Physics

Once the bond network is known, ideal bond lengths can be calculated from the theoretical bond valences described in Chapter 3, but these cannot always be embedded in three-dimensional space without ... More


Analysis of extended inorganic structures

John Evans

in Crystal Structure Analysis: Principles and Practice

Published in print:
2009
Published Online:
September 2009
ISBN:
9780199219469
eISBN:
9780191722516
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199219469.003.0014
Subject:
Physics, Crystallography: Physics

Extended (polymeric) inorganic structures present different problems to crystallographers than molecular structures. The samples are often tiny crystals, atomic scattering powers vary widely, and ... More


Non-Stoichiometric Compounds Derived From Extended Defects

Koji Kosuge

in Chemistry of Non-stoichiometric Compounds

Published in print:
1994
Published Online:
November 2020
ISBN:
9780198555551
eISBN:
9780191916687
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198555551.003.0005
Subject:
Chemistry, Inorganic Chemistry

The non-stoichiometric compounds that we describe in this chapter are closely correlated with the classical non-stoichiometric compounds derived from point defects ... More


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