Single-crystal neutron diffraction studies on CeCu{sub 2}Ge{sub 2} and CeCu{sub 1.9}Ni{sub 0.1}Ge{sub 2}

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.6416· OSTI ID:524945

Krimmel, A ^[1]; Loidl, A ^[1]; Schober, H ^[2]; Canfield, P C ^[3]

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1. Institut fuer Festkoerperphysik, TH Darmstadt, 64289 Darmstadt (Germany)
2. Institut Laue Langevin, BP 156X, 38042 Grenoble (France)
3. Ames Laboratory, Iowa State University, Ames, Iowa 50011-3020 (United States)

We have performed single-crystal neutron diffraction studies on CeCu{sub 2}Ge{sub 2} and CeCu{sub 1.9}Ni{sub 0.1}Ge{sub 2} to get insight into the very unusual magnetic properties of these compounds. CeCu{sub 2}Ge{sub 2} orders antiferromagnetically below T{sub N}=4.15 K in an incommensurate sinusoidal amplitude modulated structure. CeCu{sub 1.9}Ni{sub 0.1}Ge{sub 2} shows two successive magnetic phase transitions at T{sub N1}=3.65 K and T{sub N2}=2.65 K, respectively. The corresponding magnetic structures are very similar to each other as well as to the magnetic structure of pure CeCu{sub 2}Ge{sub 2}. Based on the temperature dependence of the intensities of the principal magnetic reflections, the two magnetic phases seem to superimpose independently of each other. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 524945
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 10 Vol. 55; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM ALLOYS
COPPER ALLOYS
GERMANIUM ALLOYS
MAGNETIC PROPERTIES
NEUTRON DIFFRACTION
NICKEL ALLOYS
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE
heavy fermion systems
magnetic structure
magnetic transitions