Mössbauer studies on the Fe(II) oxalate spin ladder Na2Fe2(C2O4)3(H2O)2

Kreitlow, J.; Baabe, Dirk; Wolter, A. U. B.; Süllow, S.; Litterst, F. J.; Price, Daniel J.; Klauss, H.-H.

doi:10.1016/j.jmmm.2003.12.676

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…The magnetic susceptibility of a powder sample of the Fe(II) compound has been measured by Kreitlow et al [46]. In SIOX, the Fe(II) ions are in the 3d 6 configuration with an orbitally degenerate ground state 5 T 2g and a spin of S = 2 per ion in the high-spin state.…”

Section: Magnetic Susceptibilitymentioning

confidence: 99%

High Field Level Crossing Studies on Spin Dimers in the Low Dimensional Quantum Spin System Na2T2(C2O2)3(H2O)2 with T = Ni, Co, Fe, Mn

Mennerich

Klauß

Wolter

et al. 2008

NATO Science for Peace and Security Series B: Physics and Biophysics

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In this paper we demonstrate the application of high magnetic fields to study the magnetic properties of low dimensional spin systems. We present a case study on the series of 2-leg spin-ladder compounds Na2T2(C2O4)3(H2O)2 with T = Ni, Co, Fe and Mn. In all compounds the transition metal is in the T 2+ high spin configuation. The localized spin varies from S=1 to 3/2, 2 and 5/2 within this series. The magnetic properties were examined experimentally by magnetic susceptibility, pulsed high field magnetization and specific heat measurements. The data are analysed using a spin hamiltonian description. Although the transition metal ions form structurally a 2-leg ladder, an isolated dimer model consistently describes the observations very well. This behaviour can be understood in terms of the different coordination and superexchange angles of the oxalate ligands along the rungs and legs of the 2-leg spin ladder. All compounds exhibit magnetic field driven ground state changes which at very low temperatures lead to a multistep behaviour in the magnetization curves. In the Co and Fe compounds a strong axial anisotropy induced by the orbital magnetism leads to a nearly degenerate ground state and a strongly reduced critical field. We find a monotonous decrease of the intradimer magnetic exchange if the spin quantum number is increased.

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Section: Magnetic Susceptibilitymentioning

confidence: 99%

High Field Level Crossing Studies on Spin Dimers in the Low Dimensional Quantum Spin System Na2T2(C2O2)3(H2O)2 with T = Ni, Co, Fe, Mn

Mennerich

Klauß

Wolter

et al. 2008

NATO Science for Peace and Security Series B: Physics and Biophysics

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“…The initial research focused on structural diversity of metal‐oxalate compounds, as reported in, for example, M 2 [Mo 2 O 5 (C 2 O 4 ) 2 (H 2 O) 2 ], M 2 [MoO 3 (C 2 O 4 )] ( M = Na, K, Rb, Cs), Na 2 U 2 M (C 2 O 4 ) 6 (H 2 O) 4 ( M = Mn 2+ , Fe 2+ , Co 2+ , and Zn 2+ ), and K 3 VO 2 (C 2 O 4 ) 2 (H2O) 3 . Later, the magnetic properties of hydrothermally‐prepared Na 2 M 2 (C 2 O 4 ) 3 · 2H 2 O ( M = Fe, Co, Ni) and K 2 M (C 2 O 4 ) 2 ( M = Fe, Co) were studied . More recently, Hussain et al reported the photoemission of K 2 Ni(C 2 O 4 ) 2 · 6H 2 O and Na 2 Co(C 2 O 4 ) 2 · 8H 2 O, obtained by a slow evaporation method , .…”

Section: Introductionmentioning

confidence: 99%

A Novel Copper Oxalate, Na₂Cu(C₂O₄)₂

Yao

Armstrong

Lightfoot

2016

Zeitschrift anorg allge chemie

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“…magnetic ground state down to 2 K, strong magnetic exchange along the rungs of the two-leg ladder References: (a)Chen et al (1985), (b)Li et al (2015), (c) this work, (d)Hursthouse et al (2004), (e)Kreitlow et al (2004).…”

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confidence: 98%

Structure of the new iron(II) oxalate potassium salt K₂Fe[(C₂O₄)₂(H₂O)₂]·0.18H₂O

Amanchar,

Schweitzer,

Mazet

et al. 2023

Acta Crystallogr Sect B

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The discovery of a new FeII oxalate framework of composition K2Fe[(C2O4)2(H2O)2]·0.18H2O is reported. Its crystal structure was solved by means of single crystal and powder X-ray diffraction. The new organic–inorganic hybrid compound crystallizes in the orthorhombic space group Pca21 with unit-cell parameters: a = 12.0351 (4) Å, b = 15.1265 (5) Å, c = 10.5562 (4) Å. This crystal structure, containing eight chemical formula, consists of a succession of FeO4(H2O)2 octahedra and K+ cations growing along b direction. Magnetization measurements indicate that the title compound is paramagnetic over the investigated temperature range (2–300 K). Both magnetization and 57Fe Mössbauer data indicate that Fe2+ is in a high-spin state.

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Mössbauer studies on the Fe(II) oxalate spin ladder Na2Fe2(C2O4)3(H2O)2

Cited by 10 publications

References 2 publications

High Field Level Crossing Studies on Spin Dimers in the Low Dimensional Quantum Spin System Na2T2(C2O2)3(H2O)2 with T = Ni, Co, Fe, Mn

High Field Level Crossing Studies on Spin Dimers in the Low Dimensional Quantum Spin System Na2T2(C2O2)3(H2O)2 with T = Ni, Co, Fe, Mn

A Novel Copper Oxalate, Na₂Cu(C₂O₄)₂

Structure of the new iron(II) oxalate potassium salt K₂Fe[(C₂O₄)₂(H₂O)₂]·0.18H₂O

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Mössbauer studies on the Fe(II) oxalate spin ladder Na2Fe2(C2O4)3(H2O)2

Cited by 10 publications

References 2 publications

High Field Level Crossing Studies on Spin Dimers in the Low Dimensional Quantum Spin System Na2T2(C2O2)3(H2O)2 with T = Ni, Co, Fe, Mn

High Field Level Crossing Studies on Spin Dimers in the Low Dimensional Quantum Spin System Na2T2(C2O2)3(H2O)2 with T = Ni, Co, Fe, Mn

A Novel Copper Oxalate, Na2Cu(C2O4)2

Structure of the new iron(II) oxalate potassium salt K2Fe[(C2O4)2(H2O)2]·0.18H2O

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A Novel Copper Oxalate, Na₂Cu(C₂O₄)₂

Structure of the new iron(II) oxalate potassium salt K₂Fe[(C₂O₄)₂(H₂O)₂]·0.18H₂O