The Systematics of Crystal Polymorphic Transformations (Generalized on the Basis of Buerger’s Criteria)

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The Systematics of Crystal Polymorphic Transformations (Generalized on the Basis of Buerger’s Criteria). / Filatov, S. K.; Paufler, P.

In: Geology of Ore Deposits, Vol. 62, No. 8, 12.2020, p. 690-703.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{fb1541d63a914b188a1292ae38c7f479,

title = "The Systematics of Crystal Polymorphic Transformations (Generalized on the Basis of Buerger{\textquoteright}s Criteria)",

abstract = "Abstract—An extended (3 × 3) classification of polymorphic transformations is proposed with the zeroth coordination sphere added to spheres I and II according to Buerger. Thus, the transformable coordination sphere is 0 for an atom or ion, 1 for a coordination polyhedron, and 2 for the nearest surroundings of a coordination polyhedron. The other classification parameter is determined by Buerger{\textquoteright}s energetic transformation barrier. As well as reconstructive and deformation transformations, transformations of intermediate types occur, which are characterized by disordering of structural units (atoms, molecules, and other atomic complexes). The electron transitions within an atom, the variation of atomic spin, and magnetic ordering of atoms in a crystal structure are considered as examples of polymorphic transformations with the variations in the zeroth coordination sphere. The disordering transformations are illustrated by substitution–jumps of structural units and their free or hindered rotation. The concept of “polymorphism” for chemical elements is developed.",

keywords = "classification of polymorphic transformations, crystal structure, polymorphism in crystals",

author = "Filatov, {S. K.} and P. Paufler",

note = "Funding Information: This study was supported by the Russian Foundation for Basic Research, Project no. 18-29-12106. Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2020",

month = dec,

doi = "10.1134/S1075701520080048",

language = "English",

volume = "62",

pages = "690--703",

journal = "Geology of Ore Deposits",

issn = "1075-7015",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "8",

}

RIS

TY - JOUR

T1 - The Systematics of Crystal Polymorphic Transformations (Generalized on the Basis of Buerger’s Criteria)

AU - Filatov, S. K.

AU - Paufler, P.

N1 - Funding Information: This study was supported by the Russian Foundation for Basic Research, Project no. 18-29-12106. Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2020/12

Y1 - 2020/12

N2 - Abstract—An extended (3 × 3) classification of polymorphic transformations is proposed with the zeroth coordination sphere added to spheres I and II according to Buerger. Thus, the transformable coordination sphere is 0 for an atom or ion, 1 for a coordination polyhedron, and 2 for the nearest surroundings of a coordination polyhedron. The other classification parameter is determined by Buerger’s energetic transformation barrier. As well as reconstructive and deformation transformations, transformations of intermediate types occur, which are characterized by disordering of structural units (atoms, molecules, and other atomic complexes). The electron transitions within an atom, the variation of atomic spin, and magnetic ordering of atoms in a crystal structure are considered as examples of polymorphic transformations with the variations in the zeroth coordination sphere. The disordering transformations are illustrated by substitution–jumps of structural units and their free or hindered rotation. The concept of “polymorphism” for chemical elements is developed.

AB - Abstract—An extended (3 × 3) classification of polymorphic transformations is proposed with the zeroth coordination sphere added to spheres I and II according to Buerger. Thus, the transformable coordination sphere is 0 for an atom or ion, 1 for a coordination polyhedron, and 2 for the nearest surroundings of a coordination polyhedron. The other classification parameter is determined by Buerger’s energetic transformation barrier. As well as reconstructive and deformation transformations, transformations of intermediate types occur, which are characterized by disordering of structural units (atoms, molecules, and other atomic complexes). The electron transitions within an atom, the variation of atomic spin, and magnetic ordering of atoms in a crystal structure are considered as examples of polymorphic transformations with the variations in the zeroth coordination sphere. The disordering transformations are illustrated by substitution–jumps of structural units and their free or hindered rotation. The concept of “polymorphism” for chemical elements is developed.

KW - classification of polymorphic transformations

KW - crystal structure

KW - polymorphism in crystals

UR - http://www.scopus.com/inward/record.url?scp=85100755789&partnerID=8YFLogxK

U2 - 10.1134/S1075701520080048

DO - 10.1134/S1075701520080048

M3 - Article

AN - SCOPUS:85100755789

VL - 62

SP - 690

EP - 703

JO - Geology of Ore Deposits

JF - Geology of Ore Deposits

SN - 1075-7015

IS - 8

ER -

ID: 74714453