Impact of rare earth magnetic moment on ordering of Ru in Sr2RuREO6 (RE=Gd and Eu)

V. P.S. Awana; Rahul Tripaathi; V. K. Sharma; H. Kishan; E. Takayama-Muromachi; I. Felner

doi:10.1016/j.jmmm.2006.10.409

Impact of rare earth magnetic moment on ordering of Ru in Sr₂RuREO₆ (RE=Gd and Eu)

V. P.S. Awana^*
, Rahul Tripaathi
, V. K. Sharma
, H. Kishan
, E. Takayama-Muromachi
, I. Felner

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

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 T_N 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 (H^SF) 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 8μ_B for Gd³⁺ influences the anti ferromagnetic (AFM) ordering of Ru in case of Gd/Ru-211O₆.

Original language	English
Pages (from-to)	290-293
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	312
Issue number	2
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.409
State	Published - May 2007

Keywords

Antiferromagnetism
Ferromaganetism
Ruthenates
Spin freezing

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10.1016/j.jmmm.2006.10.409

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title = "Impact of rare earth magnetic moment on ordering of Ru in Sr2RuREO6 (RE=Gd and Eu)",

abstract = "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.",

keywords = "Antiferromagnetism, Ferromaganetism, Ruthenates, Spin freezing",

author = "Awana, \{V. P.S.\} and Rahul Tripaathi and Sharma, \{V. K.\} and H. Kishan and E. Takayama-Muromachi and I. Felner",

year = "2007",

month = may,

doi = "10.1016/j.jmmm.2006.10.409",

language = "אנגלית",

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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

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ER -

Impact of rare earth magnetic moment on ordering of Ru in Sr₂RuREO₆ (RE=Gd and Eu)

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