de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Crystal structures and variable magnetism of PbCu2(XO3)2Cl2 with X = Se, Te

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons126671

Janson,  O.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126819

Rosner,  H.
Helge Rosner, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126888

Tsirlin,  A. A.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Berdonosov, P. S., Janson, O., Olenev, A. V., Krivovichev, S. V., Rosner, H., Dolgikh, V. A., et al. (2013). Crystal structures and variable magnetism of PbCu2(XO3)2Cl2 with X = Se, Te. Dalton Transactions, 42(26), 9547-9554. doi:10.1039/c3dt50426c.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-1FBF-E
Abstract
Novel Cu2+-based compounds PbCu2(SeO3)(2)Cl-2 (space group C2/c; a = 13.056(1) angstrom; b = 9.5567(9) angstrom; c = 6.9006(6) angstrom; beta = 90.529(7)degrees; R-I = 0.0371) and PbCu2(TeO3)(2)Cl-2 (space group P21; a = 7.2401(2) angstrom; b = 7.2688(2) angstrom; c = 8.2846(2) angstrom; beta = 96.416(2)degrees; R-I = 0.0570) have been obtained by solid-state synthesis. Their crystal structures are remarkably dissimilar and underlie a very different magnetic behavior. While PbCu2(SeO3)(2)Cl-2 can be well described by a spin-chain model with an exchange coupling of J(1)similar or equal to 160 K, PbCu2(TeO3)(2)Cl-2 is a spin-dimer system that, however, features a comparable magnetic nearest-neighbor coupling of J. 213 K. PbCu2(SeO3)(2)Cl-2 orders antiferromagnetically below 12 K, whereas PbCu2(TeO3)(2)Cl-2 lacks long-range magnetic order down to at least 2 K, owing to the strong dimerization of the Cu2+ spins. Crystal structures of both compounds are rationalized in terms of relevant magnetic exchange pathways, and the implications for a broader range of Cu2+ compounds are discussed.