New phase diagram of Zn-doped CuGeO{sub 3}

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R6835· OSTI ID:383196

Sasago, Y; Koide, N; Uchinokura, K ^[1]; Martin, M C; Hase, M; Hirota, K; Shirane, G ^[2]

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1. Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)
2. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

A series of high-quality single crystals of Cu{sub 1{minus}{ital x}}Zn{sub {ital x}}GeO{sub 3} have been examined by neutron-scattering techniques. An antiferromagnetic (AF) ordering is confirmed for four samples in the range 0.009{le}{ital x}{le}0.047, in complete agreement with previous reports. We show that the spin-Peierls (SP) phase transition persists to 4.7{percent} Zn, whereas previous magnetic-susceptibility measurements reported a deterioration of the SP transition above 2{percent} Zn. We present some details of the successive transitions upon lowering temperature into the spin-Peierls phase which is followed by a transition into an antiferromagnetically ordered phase. Below the N{acute e}el temperature we observe the coexistence of the SP lattice dimerization and AF states. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 383196
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 10 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
COPPER OXIDES
GERMANIUM OXIDES
MONOCRYSTALS
NEEL TEMPERATURE
NEUTRON DIFFRACTION
PEIERLS INSTABILITY
PHASE DIAGRAMS
ZINC ADDITIONS