Boron substitution in ternary metal phosphide superconductors

Partial substitution of boron for phosphorus in the ternary phosphide superconductors ZrRuP and LaRu 2P 2 induces highly anisotropic structural changes and suppresses the superconducting transition temperatures. Undoped ZrRuP [hexagonal, a=6.445(4) Å, c=3.765(2) Å] systematically expands for ZrRuP 1...

Full description

Saved in:
Bibliographic Details
Published in:Materials research bulletin 2004-07, Vol.39 (9), p.1231-1235
Main Authors: Schaak, R.E, Cava, R.J
Format: Article
Language:English
Subjects:
A. Intermetallic compounds
A. Superconductors
ANISOTROPY
B. Chemical synthesis
BORON
C. X-ray diffraction
CHEMICAL PREPARATION
D. Magnetic properties
INTERMETALLIC COMPOUNDS
MAGNETIC PROPERTIES
MATERIALS SCIENCE
METALS
PHOSPHORUS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Partial substitution of boron for phosphorus in the ternary phosphide superconductors ZrRuP and LaRu 2P 2 induces highly anisotropic structural changes and suppresses the superconducting transition temperatures. Undoped ZrRuP [hexagonal, a=6.445(4) Å, c=3.765(2) Å] systematically expands for ZrRuP 1− x B x ( x=0.05, 0.10, 0.15, 0.20, 0.40) in the a direction to 6.949(4) Å and shrinks in the c direction to 3.601(3) Å. Superconductivity is still present in the boron-substituted samples, although T c drops from 10.1 K in ZrRuP to 5.6 K in ZrRuP 0.6B 0.4. LaRu 2P 2 [tetragonal, a=4.032(2) Å, c=10.632(7) Å] remains essentially unchanged along the a axis [ a=4.037(1) Å] upon substitution at a starting composition of LaRu 2P 1.6B 0.4, but shrinks along the c axis to 10.477(5) Å. Accordingly, the superconducting T c drops from 4.0 K for LaRu 2P 2 to 2.0 K for LaRu 2P 1.6B 0.4.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2004.04.011