Magnetic structure of rare-earth dodecaborides

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.10.046· OSTI ID:20905433

Siemensmeyer, K ^[1]; Flachbart, K ^[2]; Gabani, S ^[2]; Matas, S ^[1]; Paderno, Y ^[3]; Shitsevalova, N ^[3]

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1. Hahn Meiner Institute, Glienicker Street 100, D-14109 Berlin (Germany)
2. Institute of Experimental Physics, Slovak Academy of Sciences, SK-04353 Kosice (Slovakia)
3. Institute for Problems of Material Science, NASU, UA-252680 Kiev (Ukraine)

We have investigated the magnetic structure of HoB{sub 12}, ErB{sub 12} and TmB{sub 12} by neutron diffraction on isotopically enriched single-crystalline samples. Results in zero field as well as in magnetic field up to 5T reveal modulated incommensurate magnetic structures in these compounds. The basic reflections can be indexed with q=(1/2+/-{delta}, 1/2+/-{delta}, 1/2+/-{delta}), where {delta}=0.035 both for HoB{sub 12} and TmB{sub 12} and with q=(3/2+/-{delta}, 1/2+/-{delta}, 1/2+/-{delta}), where {delta}=0.035, for ErB{sub 12}. In an applied magnetic field, new phases are observed. The complex magnetic structure of these materials seems to result from the interplay between the RKKY and dipole-dipole interaction. The role of frustration due to the fcc symmetry of dodecaborides and the crystalline electric field effect is also considered.

• OSTI ID: 20905433
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 9 Vol. 179; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ERBIUM BORIDES
FCC LATTICES
HOLMIUM BORIDES
MAGNETIC FIELDS
MONOCRYSTALS
NEUTRON DIFFRACTION
PHASE DIAGRAMS
THULIUM BORIDES