Stabilizing the Tb-based 214 cuprate by partial Pd substitution

Yuzki M. Oey, James Eujin Park, Jing Tao, Elizabeth M. Carnicom, Tai Kong, Marisa B. Sanders, R. J. Cava

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3 Scopus citations


Previously known to form only under high pressure synthetic conditions, here we report that the T′-type 214-structure cuprate based on the rare earth atom Tb is stabilized for ambient pressure synthesis through partial substitution of Pd for Cu. The new material is obtained in purest form for mixtures of nominal composition Tb1.96Cu0.8Pd0.2O4. The refined formula, in orthorhombic space group Pbca, with a = 5.5117(1) Å, b = 5.5088(1) Å, and c = 11.8818(1) Å, is Tb2Cu0.83Pd0.17O4. An incommensurate structural modulation is seen along the a axis by electron diffraction and high resolution imaging. Magnetic susceptibility measurements reveal long-range antiferromagnetic ordering at 7.9 K, with a less pronounced feature at 95 K; a magnetic moment reorientation transition is observed to onset at a field of approximately 1.1 T at 3 K. The material is an n-type semiconductor.

Original languageEnglish (US)
Pages (from-to)1690-1697
Number of pages8
JournalJournal of Materials Research
Issue number11
StatePublished - Jun 13 2018

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


  • crystallographic structure
  • lanthanide
  • superconducting


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