Stabilizing the Tb-based 214 cuprate by partial Pd substitution

Journal Article · 14 May 2018 · Journal of Materials Research

DOI: https://doi.org/10.1557/jmr.2018.102 · OSTI ID:1466577

Oey, Yuzki M.  ^[1]; Park, James Eujin ^[1]; Tao, Jing  ^[2]; Carnicom, Elizabeth M. ^[1]; Kong, Tai ^[1]; Sanders, Marisa B. ^[1]; Cava, R. J. ^[1]

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1. Princeton Univ., NJ (United States). Dept. of Chemistry
2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.

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 Tb_1.96Cu_0.8Pd_0.2O₄. 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 Tb₂Cu_0.83Pd_0.17O₄. An incommensurate structural modulation is seen along the a axis by electron diffraction and high resolution imaging. Finally, 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.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: SC0012704
• OSTI ID: 1466577
• Report Number(s): BNL--209017-2018-JAAM; BNL-208007--2018-JAAM
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 11 Vol. 33; ISSN 0884-2914; ISSN applab
• Publisher: Materials Research SocietyCopyright Statement
• Country of Publication: United States
• Language: English