Single-crystal neutron diffraction studies on CeCu{sub 2}Ge{sub 2} and CeCu{sub 1.9}Ni{sub 0.1}Ge{sub 2}
- Institut fuer Festkoerperphysik, TH Darmstadt, 64289 Darmstadt (Germany)
- Institut Laue Langevin, BP 156X, 38042 Grenoble (France)
- 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, Vol. 55, Issue 10; Other Information: PBD: Mar 1997
- Country of Publication:
- United States
- Language:
- English
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