Author:
Fabrykiewicz Piotr,Przeniosło Radosław,Sosnowska Izabela,Fauth François,Oleszak Dariusz
Abstract
The symmetry lowering from tetragonal to orthorhombic is demonstrated using high-resolution diffraction and also justified by using the magnetic superspace groups formalism for the rutile-type compound β-MnO2. The (lower) orthorhombic symmetry is observed at temperatures both below and above the Néel temperature. The magnetic ordering of β-MnO2 is of spin density type and not screw-type helical. The results support the de Wolff [Acta Cryst. (1959), 12, 341–345] hypothesis about the orthorhombic symmetry of β-MnO2.
Funder
Ministerstwo Nauki i Szkolnictwa Wyższego
Publisher
International Union of Crystallography (IUCr)
Subject
Inorganic Chemistry,Physical and Theoretical Chemistry,Condensed Matter Physics,General Materials Science,Biochemistry,Structural Biology
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