A new realisation of the S = 1/2 frustrated chain antiferromagnet

G. J. Nilsen*, H. M. Rønnow, A. M. Läuchli, F. P A Fabbiani, J. Sanchez-Benitez, K. V. Kamenev, A. Harrison

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The synthesis, crystal structure, and the magnetic properties of KTi(SO4). H2O, a novel frustrated model magnet with the Krausite structure of its B = Fe analogue have been reported. KTi(SO 4).H2O was discovered in an exploration of the aqueous K+-Ti3+-SO4 2- system under hydrothermal conditions. K2SO4,Ti(SO4) 2, and sulphuric acid were combined in the molar ratio 2:7:15 inside a PTFE lined bomb, which was heated to 1550C for 48 hr. Cooling yielded small bluish purple crystals in addition to amorphous impurity and a crystal of preset dimensions was selected for single-crystal diffraction. The specific heat and magnetic susceptibility measurements on KTi(SO 4).H2O indicate a promising realization of the S =1/2 frustrated chain model with next-nearest neighbor exchange parameters.

Original languageEnglish
Pages (from-to)8-10
Number of pages3
JournalChemistry of Materials
Volume20
Issue number1
DOIs
Publication statusPublished - 8 Jan 2008

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