Superconductivity, magnetic fluctuations, and magnetic order in TbSr{sub 2}Cu{sub 2.69}Mo{sub 0.31}O{sub 7}

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.5631· OSTI ID:538588

Li, W; Chuang, W Y; Wu, S Y; Lee, K C ^[1]; Lynn, J W ^[2]; Tsay, H L; Yang, H D ^[3]

---

1. Department of Physics, National Central University, Chung-Li, Taiwan 32054, Republic of (China)
2. Reactor Radiation Division, NIST, Gaithersburg, Maryland 20899 (United States)
3. Department of Physics, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424, Republic of (China)

Neutron-diffraction and ac-susceptibility measurements have been performed to study the superconductivity and magnetic order of the Tb spins in polycrystalline TbSr{sub 2}Cu{sub 2.69}Mo{sub 0.31}O{sub 7}. Superconductivity with an onset temperature at 37 K was observed in the dc electrical resistivity and ac-magnetic-susceptibility measurements. A two-step transition to the superconducting state was seen, as both intragranular and Josephson-like intergranular losses were evident in the out-of-phase component of the ac susceptibility. Magnetic correlations between the Tb spins start developing around 40 K, and the correlation length diverges at T{sub N}=5.4K with the nearest-neighbor Tb spins aligned antiparallel along all three crystallographic directions. Below 5.4 K, superconductivity and Tb magnetic order coexist. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 538588
• Journal Information: Physical Review, B: Condensed Matter, Vol. 56, Issue 9; Other Information: PBD: Sep 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TERBIUM OXIDES
SUPERCONDUCTIVITY
NEUTRON DIFFRACTION
MAGNETIC SUSCEPTIBILITY
STRONTIUM OXIDES
COPPER OXIDES
MOLYBDENUM OXIDES
ELECTRIC CONDUCTIVITY
NEEL TEMPERATURE
ANTIFERROMAGNETIC MATERIALS
HIGH-TC SUPERCONDUCTORS