Low temperature hysteretic behavior of the interpenetrating 3-D network structured [Ru2(O2CMe)4]3[Fe(CN) 6] magnet

Firoze Haque; Enrique Del Barco; Randy S. Fishman; Joel S. Miller

doi:10.1016/j.poly.2013.02.049

Low temperature hysteretic behavior of the interpenetrating 3-D network structured [Ru₂(O₂CMe)₄]₃[Fe(CN) ₆] magnet

Firoze Haque, Enrique Del Barco, Randy S. Fishman, Joel S. Miller

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

9 Scopus citations

Abstract

The low temperature hysteretic behavior between 40 mK and 4.8 K was obtained for the interpenetrated 3-D structured [Ru₂(O ₂CMe)₄]₃[Fe(CN)₆]. The unusual constricted hysteretic behavior reported for isomorphous [Ru₂(O ₂CMe)₄]₃[Cr(CN)₆] was not observed, however, the [Ru₂(O₂CMe)₄]₃[Fe(CN) ₆] exhibits a single hysteresis loop and a temperature dependence of the coercivity atypical for a ferrimagnetic ordering transition. The 1.06 kOe coercive field is constant below ∼0.3 K, and shows a rapid initial decrease below 1 K, and continues decreasing at a slower rate up to at least 4.8 K. In contrast to [Ru₂(O₂CMe)₄]₃[Cr(CN) ₆], which has antiferromagnetic coupling of the ferrimagnetic lattices due to the reduced spin on the [Fe^III(CN)₆] ^3-, [Ru₂(O₂CMe)₄] ₃[Fe(CN)₆] exhibits ferromagnetic coupling of the ferrimagnetic lattices that dominates for [Ru₂(O₂CMe) ₄]₃[Fe(CN)₆].

Original language	English
Pages (from-to)	73-76
Number of pages	4
Journal	Polyhedron
Volume	64
DOIs	https://doi.org/10.1016/j.poly.2013.02.049
State	Published - 2013
Externally published	Yes

Funding

We appreciate the synthesis of [Ru 2 (O 2 CMe) 4 ] 3 [Cr(CN) 6 ] by the late Joshua D. Bell, and the continued support by the US National Science Foundation (F.H. and E.d.B.) from Grant DMR-0747587 , and from Grant DMR-11063630 (J.S.M). R.F. acknowledges support from the US Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division . The synthesis and higher temperature magnetization studies were executed at the University of Utah, the low temperature magnetization studies were studied at Central Florida University, and the theoretical insight from Oak Ridge National Laboratory. All groups analyzed the data and contributed to the writing of the manuscript.

Funders	Funder number
National Science Foundation	DMR-11063630, DMR-0747587
U.S. Department of Energy
Basic Energy Sciences
Division of Materials Sciences and Engineering

Keywords

Hysteresis loops
Magnetization
Pressure
Ruthenium dimers

Access to Document

10.1016/j.poly.2013.02.049

Cite this

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title = "Low temperature hysteretic behavior of the interpenetrating 3-D network structured [Ru2(O2CMe)4]3[Fe(CN) 6] magnet",

abstract = "The low temperature hysteretic behavior between 40 mK and 4.8 K was obtained for the interpenetrated 3-D structured [Ru2(O 2CMe)4]3[Fe(CN)6]. The unusual constricted hysteretic behavior reported for isomorphous [Ru2(O 2CMe)4]3[Cr(CN)6] was not observed, however, the [Ru2(O2CMe)4]3[Fe(CN) 6] exhibits a single hysteresis loop and a temperature dependence of the coercivity atypical for a ferrimagnetic ordering transition. The 1.06 kOe coercive field is constant below ∼0.3 K, and shows a rapid initial decrease below 1 K, and continues decreasing at a slower rate up to at least 4.8 K. In contrast to [Ru2(O2CMe)4]3[Cr(CN) 6], which has antiferromagnetic coupling of the ferrimagnetic lattices due to the reduced spin on the [FeIII(CN)6] 3-, [Ru2(O2CMe)4] 3[Fe(CN)6] exhibits ferromagnetic coupling of the ferrimagnetic lattices that dominates for [Ru2(O2CMe) 4]3[Fe(CN)6].",

keywords = "Hysteresis loops, Magnetization, Pressure, Ruthenium dimers",

author = "Firoze Haque and {Del Barco}, Enrique and Fishman, {Randy S.} and Miller, {Joel S.}",

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AU - Haque, Firoze

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AU - Fishman, Randy S.

AU - Miller, Joel S.

PY - 2013

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N2 - The low temperature hysteretic behavior between 40 mK and 4.8 K was obtained for the interpenetrated 3-D structured [Ru2(O 2CMe)4]3[Fe(CN)6]. The unusual constricted hysteretic behavior reported for isomorphous [Ru2(O 2CMe)4]3[Cr(CN)6] was not observed, however, the [Ru2(O2CMe)4]3[Fe(CN) 6] exhibits a single hysteresis loop and a temperature dependence of the coercivity atypical for a ferrimagnetic ordering transition. The 1.06 kOe coercive field is constant below ∼0.3 K, and shows a rapid initial decrease below 1 K, and continues decreasing at a slower rate up to at least 4.8 K. In contrast to [Ru2(O2CMe)4]3[Cr(CN) 6], which has antiferromagnetic coupling of the ferrimagnetic lattices due to the reduced spin on the [FeIII(CN)6] 3-, [Ru2(O2CMe)4] 3[Fe(CN)6] exhibits ferromagnetic coupling of the ferrimagnetic lattices that dominates for [Ru2(O2CMe) 4]3[Fe(CN)6].

AB - The low temperature hysteretic behavior between 40 mK and 4.8 K was obtained for the interpenetrated 3-D structured [Ru2(O 2CMe)4]3[Fe(CN)6]. The unusual constricted hysteretic behavior reported for isomorphous [Ru2(O 2CMe)4]3[Cr(CN)6] was not observed, however, the [Ru2(O2CMe)4]3[Fe(CN) 6] exhibits a single hysteresis loop and a temperature dependence of the coercivity atypical for a ferrimagnetic ordering transition. The 1.06 kOe coercive field is constant below ∼0.3 K, and shows a rapid initial decrease below 1 K, and continues decreasing at a slower rate up to at least 4.8 K. In contrast to [Ru2(O2CMe)4]3[Cr(CN) 6], which has antiferromagnetic coupling of the ferrimagnetic lattices due to the reduced spin on the [FeIII(CN)6] 3-, [Ru2(O2CMe)4] 3[Fe(CN)6] exhibits ferromagnetic coupling of the ferrimagnetic lattices that dominates for [Ru2(O2CMe) 4]3[Fe(CN)6].

KW - Hysteresis loops

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