Ferromagnetism and the metal-insulator transition in the magnetic semiconductor system FexMn1−x S

Loseva, G. V.; Ryabinkina, L. I.; Balaev, A. D.

doi:10.1134/1.1130285

Cited by 6 publications

(8 citation statements)

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“…Measurements were per formed for two samples of the same composition pre pared from single crystals with the as batched compo sitions x = 0.10, 0.18, and 0.29. It is established that the temperature corresponding to the peak of mag netic susceptibility, which indicates the presence of the magnetic transition in the Cr x Mn 1 -x S single crystals, decreases monotonically from 149 K (x = 0) to 96 K for x = 0.29, which substantially differs from results [3]. As the degree of substitution increases, the addi tional anomaly in the region ~40 K appears in the tem perature dependence of magnetic susceptibility for x = 0.18 and x = 0.29.…”

Section: Resultsmentioning

confidence: 79%

“…Discrepancies in the data presented in [3,4] allowed us to pose the question on magnetic properties of the Cr x Mn 1 -x S sulfides again.…”

Section: Introductionmentioning

confidence: 96%

“…The results of the syn thesis of solid solutions of this system were for the first time published in [2]. Magnetic properties of polycrys talline Cr x Mn 1 -x S samples are presented in [3,4]. According to [3], these materials are antiferromagnets with the Néel temperature increasing to 240 K as the chromium concentration increases (x = 0.67).…”

Section: Introductionmentioning

confidence: 98%

“…Magnetic properties of polycrys talline Cr x Mn 1 -x S samples are presented in [3,4]. According to [3], these materials are antiferromagnets with the Néel temperature increasing to 240 K as the chromium concentration increases (x = 0.67). Investi gation of the polycrystalline Cr x Mn 1 -x S sample with x = 0.5 showed the presence of the ferromagnetic tran sition at 66 K [4].…”

Section: Introductionmentioning

confidence: 99%

“…Poly crystalline sulfides of the Cr x Mn 1 -x S system, which were synthesized on the basis of manganese monosul fide, were investigated in [2][3][4][5]. The results of the syn thesis of solid solutions of this system were for the first time published in [2].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic properties of single crystals of the Cr x Mn1 − x S solid solutions (0 ≤ x < 0.3)

et al. 2012

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The Cr x Mn 1 -x S single crystals have been synthesized based on manganese monosulfide as a result of cation substitution, and their magnetic properties have been studied. It has been established that the Cr x Mn 1 -x S solid solutions with a face centered cubic NaCl structure are formed in the concentration region 0 ≤ x < 0.3. The unit cell parameter of the solid solution decreases as the degree of substitution increases due to the variation in the ionic radius of cations. These substances are antiferromagnets. An increase in the degree of cation substitution in the Cr x Mn 1 -x S solid solutions is accompanied by a decrease in the number of 3d electrons in the d shell of manganese monosulfide and causes a decrease in the magnetic transition tem perature from 149 K (x = 0) to 96 K (x = 0.29), which differs from previously known results.

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Section: Resultsmentioning

confidence: 79%

“…Discrepancies in the data presented in [3,4] allowed us to pose the question on magnetic properties of the Cr x Mn 1 -x S sulfides again.…”

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Magnetic properties of single crystals of the Cr x Mn1 − x S solid solutions (0 ≤ x < 0.3)

et al. 2012

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10.1007/s11451-008-2004-1

2010

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Single crystals of iron manganese sulfides Fe x Mn 1 -x S (0.25 ≤ x ≤ 0.29) are experimentally investigated using Mössbauer spectroscopy and x-ray diffraction. The Mössbauer spectra measured at 300 K exhibit a single broadened line characteristic of paramagnets. The isomer shift of this line is equal to 0.92-0.94 mm/s, which is typical of Fe 2+ ions in the octahedral position. The quadrupole splitting (0.18-0.21 mm/s) suggests a distortion of the coordination polyhedron of iron ions in the Fe x Mn 1 -x S compounds.

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Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies

Kohout

Kosterov

Haloda

et al. 2010

Icarus

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Please cite this article as: Kohout, T., Kosterov, A., Haloda, J., Týcová, P., Zbořil, R., Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies, Icarus (2010), AbstractIn this study we present a review of low-temperature magnetic properties of alabandite (Fe,Mn)S, daubreelite FeCr 2 S 4 pyrrhotite Fe 1-x S and troilite FeS updated with new experimental data. The results indicate that besides FeNi alloys mainly daubreelite with its Curie temperature T C ~150 K and strong induced and remanent magnetizations may be a significant magnetic mineral in cold environments and may complement that of FeNi or even dominate magnetic properties of sulfide rich bodies at temperatures below T C .Comets are known to contain iron bearing sulfides within dusty fraction and their surfaces are subject to temperature variations in the range of 100-200 K down to the depth of several meters while the cometary interior is thermally stable at several tens of Kelvin which is within the temperature range where alabandite, daubreelite or troilite are "magnetic". Thus not only FeNi alloys, but also sulfides have to be considered in the interpretation of magnetic data from cometary objects such as will be delivered by Rosetta mission. Modeling indicates that magnetic interactions between cometary nucleus containing iron-bearing sulfides and interplanetary magnetic field would be difficult, but not impossible, to detect from orbit.Rosetta's Philae lander present on the surface would provide more reliable signal.

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Ferromagnetism and the metal-insulator transition in the magnetic semiconductor system FexMn1−x S

Cited by 6 publications

References 1 publication

Magnetic properties of single crystals of the Cr x Mn1 − x S solid solutions (0 ≤ x < 0.3)

Magnetic properties of single crystals of the Cr x Mn1 − x S solid solutions (0 ≤ x < 0.3)

10.1007/s11451-008-2004-1

Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies

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