Crystal structures and magnetic properties of two-dimensional antiferromagnets Co{sub 1-x}Zn{sub x}TeMoO{sub 6}

Journal Article · Tue Dec 15 00:00:00 EST 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.09.008· OSTI ID:21372414

Doi, Yoshihiro ^[1]; Suzuki, Ryo; Hinatsu, Yukio ^[1]; Ohoyama, Kenji ^[2]

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1. Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810 (Japan)
2. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)

Crystal structures and magnetic properties of metal telluromolybdates Co{sub 1-x}Zn{sub x}TeMoO{sub 6} (x=0.0, 0.1,...,0.9) are reported. All the compounds have an orthorhombic structure with space group P2{sub 1}2{sub 1}2 and a charge configuration of M{sup 2+}Te{sup 4+}Mo{sup 6+}O{sub 6}. In this structure, M ions form a pseudo-two-dimensional lattice in the ab plane. Their magnetic susceptibility measurements have been performed in the temperature range between 1.8 and 300 K. The end member CoTeMoO{sub 6} shows a magnetic transition at 24.4 K. The transition temperature for solid solutions rapidly decreases with increasing x and this transition disappears between x=0.4 and 0.5, which is corresponding to the percolation limit for the square-planer lattice. From the magnetization, specific heat, and powder neutron diffraction measurements, it is found that the magnetic transition observed in the CoTeMoO{sub 6} is a canted antiferromagnetic ordering of Co{sup 2+} ions. The antiferromagnetic component of the ordered magnetic moment (3.12(3)mu{sub B} at 10 K) is along the b-axis. In addition, there exists a small ferromagnetic component (0.28(3)mu{sub B}) along the a-axis. - Graphical abstract: The metal telluromolybdates Co{sub 1-x}Zn{sub x}TeMoO{sub 6} have an orthorhombic structure with space group P2{sub 1}2{sub 1}2. In this structure, M ions form a pseudo-square-planer lattice in the ab plane. These compounds show a low-dimensional magnetism reflecting this structural feature. The magnetic transition observed in the CoTeMoO{sub 6} is a canted antiferromagnetic ordering of Co{sup 2+} ions, and the figure is the magnetic structure.

• OSTI ID: 21372414
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 12; Other Information: DOI: 10.1016/j.jssc.2009.09.008; PII: S0022-4596(09)00443-5; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
COBALT COMPOUNDS
COBALT IONS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MOLYBDATES
MOLYBDENUM IONS
NEUTRON DIFFRACTION
ORTHORHOMBIC LATTICES
SOLID SOLUTIONS
SPACE GROUPS
SPECIFIC HEAT
TELLURIUM COMPOUNDS
TELLURIUM IONS
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRANSITION TEMPERATURE
ZINC COMPOUNDS
CHARGED PARTICLES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISPERSIONS
HOMOGENEOUS MIXTURES
IONS
MAGNETIC PROPERTIES
MAGNETISM
MIXTURES
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SOLUTIONS
SYMMETRY GROUPS
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS