TY - JOUR
T1 - Impact of rare earth magnetic moment on ordering of Ru in Sr2RuREO6 (RE=Gd and Eu)
AU - Awana, V. P.S.
AU - Tripaathi, Rahul
AU - Sharma, V. K.
AU - Kishan, H.
AU - Takayama-Muromachi, E.
AU - Felner, I.
PY - 2007/5
Y1 - 2007/5
N2 - We report the synthesis and magnetization of Sr2RuREO6 (RE/Ru-211O6) with RE=Gd and Eu. Both Gd and Eu/Ru-211O6 are formed in distorted perovskite-type single phase with monoclinic P21/n space group. Magnetization (M/T) measurements exhibited antiferromagnetic ordering of Ru moments for both Gd and Eu compounds at a TN of around 30 K due to super-exchange Ru-O-O-Ru interaction. Interestingly enough, detailed M/H plots of Gd/Ru-211O6 exhibited the development of a ferromagnetic (FM) component at 20 K. Furthermore, below 10 K, the FM component disappears, and rather spin freezing field (HSF) of around 1000 Oe is seen at 5 K. In case of Eu/Ru-211O6, the basic antiferromagnetic ordering of Ru moments remains invariantly down to 5 K, and the appearance of the FM component is not seen. It seems that the high magnetic moment of 8μB for Gd3+ influences the anti ferromagnetic (AFM) ordering of Ru in case of Gd/Ru-211O6.
AB - We report the synthesis and magnetization of Sr2RuREO6 (RE/Ru-211O6) with RE=Gd and Eu. Both Gd and Eu/Ru-211O6 are formed in distorted perovskite-type single phase with monoclinic P21/n space group. Magnetization (M/T) measurements exhibited antiferromagnetic ordering of Ru moments for both Gd and Eu compounds at a TN of around 30 K due to super-exchange Ru-O-O-Ru interaction. Interestingly enough, detailed M/H plots of Gd/Ru-211O6 exhibited the development of a ferromagnetic (FM) component at 20 K. Furthermore, below 10 K, the FM component disappears, and rather spin freezing field (HSF) of around 1000 Oe is seen at 5 K. In case of Eu/Ru-211O6, the basic antiferromagnetic ordering of Ru moments remains invariantly down to 5 K, and the appearance of the FM component is not seen. It seems that the high magnetic moment of 8μB for Gd3+ influences the anti ferromagnetic (AFM) ordering of Ru in case of Gd/Ru-211O6.
KW - Antiferromagnetism
KW - Ferromaganetism
KW - Ruthenates
KW - Spin freezing
UR - http://www.scopus.com/inward/record.url?scp=33947219410&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2006.10.409
DO - 10.1016/j.jmmm.2006.10.409
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AN - SCOPUS:33947219410
SN - 0304-8853
VL - 312
SP - 290
EP - 293
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2
ER -