Competition of magnetic interactions in M3Fe4V6O24 (M(II)=Zn, Cu, Mn, Mg) compounds studied by EPR

Żołnierkiewicz, G.; Guskos, N.; Typek, J.; Anagnostakis, E. A.; Blonska-Tabero, A.; Bosacka, M.

doi:10.1016/j.jallcom.2008.03.109

Cited by 22 publications

(22 citation statements)

References 18 publications

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“…Under such assumption a lot of differences between the measurements of DC magnetic susceptibility and magnetic resonance could be successfully explained. Besides, in the studied compounds, at a temperature of about 200 K, magnetic competition effects caused by the existence of different magnetic sublattices, were observed [6,15].…”

Section: Introductionmentioning

confidence: 80%

“…The M 3 Fe 4 V 6 O 24 (M = Cu, Zn, Mg, Mn and Co) compounds have been investigated for some time due to their interesting physical properties and ability to be used in different applications [1][2][3][4][5][6][7][8]. Some of them belong to the howardevansitegroup of minerals and recently two new minerals of this type were discovered in volcanic exhalations from the last eruptions of volcanoes in Kamchatka [9].…”

Section: Introductionmentioning

confidence: 99%

“…The main electron paramagnetic resonance (EPR) spectrum in all investigated compounds consists of a symmetrical, intense and broad line [4,6,7,[14][15][16]. In addition, the compounds with M = Mn and Cu show the lines derived from the manganese and copper ions with various spinlattice relaxations [7,16].…”

Section: Introductionmentioning

confidence: 99%

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High temperature EPR study of the M3Fe4V6O24 (M = Cu, Zn, Mg and Mn)

Guskos

Żołnierkiewicz

Typek

et al. 2016

Materials Science-Poland

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Electron paramagnetic resonance (EPR) spectra of M 3 Fe 4 V 6 O 24 (M = Cu, Zn, Mg and Mn) compounds in high temperature range (293 K to 493 K) have been investigated. The role of magnetic (Cu, Mn) and non-magnetic (Zn, Mg) ions in M 3 Fe 4 V 6 O 24 structure in formation of magnetic resonance spectra was studied. Temperature dependence of EPR parameters: resonance field, linewidth and integrated intensity were examined. Similarities and differences in temperature behavior of these parameters has been discussed in terms of different relaxation mechanisms and magnetic interactions in the spin systems. An important role of additional magnetic ions (M = Mn or Cu) in the M 3 Fe 4 V 6 O 24 structure has been identified and its consequences considered.

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Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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High temperature EPR study of the M3Fe4V6O24 (M = Cu, Zn, Mg and Mn)

Guskos

Żołnierkiewicz

Typek

et al. 2016

Materials Science-Poland

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“…oxidative dehydrogenation of the saturated to unsaturated compounds, are intensively studied by different techniques, including electron paramagnetic resonance (EPR) [1][2][3][4][5][6][7][8][9]. From the point of view of desired catalytic properties, the vanadates containing in their structure chains of face-sharing metal octahedra and isolated VO tetrahedral are especially useful.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Study of Phases in FeVO₄-Co₃V₂O₈ System

et al. 2017

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Magnetic properties of four nFeVO4/(1-n)Co3V2O8 samples obtained in reactions between FeVO4 and Co3V2O8 (n = 0.96, 0.86, 0.84 and 0.83, samples designated S1, S3, S4, S5, respectively) have been investigated by DC magnetisation in field cooling and zero-field-cooling modes and EPR. DC magnetic susceptibility showed paramagnetic behavior of all samples in high-temperature range (T > 20 K) and transition to antiferromagnetic state at 16-18 K (depending on sample iron content). Additional magnetic freezing at 8 K was registered for S3-S5 samples containing larger amount of cobalt. The Curie-Weiss law in 100-300 K temperature range indicates that Co 2+ is in the high-spin state (S = 3/2). From the parameters of the hysteresis loop observed for the samples it was calculated that 0.58% of all magnetic (Fe 3+ , Co 2+ ) ions were involved in the ferromagnetic states. EPR spectra of the samples were recorded in high temperature range (T > 90 K). The temperature dependence of the spectral parameters (resonance field, linewidth, integrated intensity) suggested the Fe 3+ high-spin ions coupled by antiferromagnetic interaction and clusters of ions play major role in EPR spectra.

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“…They belong to a group of useful catalysts used for the reaction of partial oxidation of organic compounds. Structural disorder, introduced by replacement of some magnetic ions in the sublattice of M(II) cations could results in an intense magnetic competition and frustration phenomena [9,10,15,16]. The above systems have displayed a very strong antiferromagnetic (AFM) interaction with very high values of the Curie-Weiss temperature, especially in compounds with Co(II) and Mn(II) magnetic ions.…”

Section: Introductionmentioning

confidence: 99%