Magnetothermal study of the hybrid frustrated magnet Dy2-x Tbx Ti2 O7

X. Ke, D. V. West, Robert Joseph Cava, P. Schiffer

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

The two pyrochlore titanates Dy2 Ti2 O7 and Tb2 Ti2 O7 have low temperature magnetic states that result from geometrical frustration of the spin-spin interactions between neighboring rare-earth ions. Dy2 Ti2 O7 is a canonical spin ice material, while the Tb moments in Tb2 Ti2 O7 have a liquidlike cooperative paramagnetic state at low temperatures. We report magnetic and thermal properties of the hybrid rare-earth titanates, Dy2-x Tbx Ti2 O7, with 0≤x≤2. We find that both the magnetic and thermal properties of the materials are strongly affected by the mixture of the ions on the sites, and that the ground state of Dy2-x Tbx Ti2 O7 is different from both spin ice and spin liquid, i.e., Dy2-x Tbx Ti2 O7 is not a simple mixture of spin ice and spin liquid components or the corresponding nonmagnetic diluted species. The strongly altered low temperature behavior is presumably associated with the Dy-Tb spin interactions and the altered crystalline electric field, suggesting that such hybrid frustrated materials offer an alternative avenue through which to explore geometrical magnetic frustration.

Original languageEnglish (US)
Article number144426
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number14
DOIs
StatePublished - Oct 29 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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