Two-dimensional S = 1 quantum antiferromagnet (NiCl)Sr2Ta 3O10

Yoshihiro Tsujimoto, Atsushi Kitada, Yasutomo J. Uemura, Tatsuo Goko, Adam A. Aczel, Travis J. Williams, Graeme M. Luke, Yasuo Narumi, Koichi Kindo, Masakazu Nishi, Yoshitami Ajiro, Kazuyoshi Yoshimura, Hiroshi Kageyama

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A topotactic ion-exchange reaction of a layered perovskite RbSr 2Ta3O10 with NiCl2 yielded a novel two-dimensional nickel-oxyhalide (NiCl)Sr2Ta3O 10, the first S = 1 compound among related series of metal-oxyhalides. The room temperature structure is isostructural with (CuCl)Ca2Nb3O10 adopting the space group P4/mmm. We found a possible structural transition at 230 K that does not lead to drastic changes in magnetic character such as nickel clustering. Despite a large Weiss temperature of θ =-125 K, magnetic long-range order is significantly suppressed down to TN1 ≈ 50 K because of two-dimensionality and strong frustration. The magnetically ordered state below TN1 has a partial volume fraction coexisting with a paramagnetic component, followed by complete long-range ordering below TN2 = 20 K. The reaction process and requirement will also be discussed.

Original languageEnglish
Pages (from-to)4625-4631
Number of pages7
JournalChemistry of Materials
Issue number16
Publication statusPublished - 2010 Aug 24

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry


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