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Crystal structure and magnetic properties of novel Hf3Ni2Si3-type R 3Co2Ge3 compounds (R=Y, Sm, Tb–Tm)
- Source :
-
Journal of Solid State Chemistry . Dec2012, Vol. 196, p93-99. 7p. - Publication Year :
- 2012
-
Abstract
- Abstract: The novel R 3Co2Ge3 compounds with R=Y, Sm, Tb–Tm adopt the Hf3Ni2Si3-type structure (ordered variant of the Ca3Ga5-type one, space group Cmcm). Sm3Co2Ge3, Tb3Co2Ge3, Ho3Co2Ge3 and Er3Co2Ge3 undergo an antiferromagnetic-type ordering and Tb3Co2Ge3 demonstrates a field-sensitive magnetic behavior. Tm3Co2Ge3 is a pure paramagnet down to 5K, whereas Y3Co2Ge3 demonstrates Pauli paramagnetism down to ∼120K. In zero applied field and between ∼50 and ∼15K Tb3Co2Ge3 shows a non-collinear antiferromagnetic ordering with wave vectors K 0=[0, 0, 0] and K 1=[±1/3, 0, 0] and a magnetic unit cell , whereas below ∼15K it exhibits a complex antiferromagnetic ordering with K 0=[0, 0, 0], K 1=[±1/3, 0, 0] and K 2=[1/2, 0, 0] wave vectors and magnetic unit cell . [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00224596
- Volume :
- 196
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 82475381
- Full Text :
- https://doi.org/10.1016/j.jssc.2012.07.053