Investigation of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>+</mml:mo><mml:mi mathvariant="normal">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>Sb system

Kumar, Rohit; Harchand, K.S.; Vishwamittar,; Chandra, K.; Jernberg, Per; Ericsson, Tore; Wäppling, R.

doi:10.1103/physrevb.32.69

Cited by 26 publications

(21 citation statements)

References 12 publications

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“…The primary impurity phase that is presented in the samples with Sb is the α-FeSb phase of NiAs-type structure. In the literature, there is no report on the transport behaviour of α-FeSb although its magnetic properties have been studied by several authors [41][42][43]. In order to clarify the issue, we have made a α-FeSb phase bulk sample with a nominal composition of Fe 1.11 Sb by the solid state reaction method.…”

Section: Resultsmentioning

confidence: 98%

Superconductivity and normal state magnetoresistance in superconducting FeSe:Sb

Chu

Shao

et al. 2010

Sci. China Phys. Mech. Astron.

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We prepared a series of β-FeSe samples with a nominal composition of Fe 1.11 Se 1−x Sb x (0≤x≤0.5). The X-ray diffraction, transport and magnetic measurements were performed on these samples to investigate the structure, the superconducting properties and the normal state transport and magnetic properties. Although the X-ray diffraction data suggested that Sb atoms were not incorporated into the β-FeSe phase, the transport data showed observable changes of superconductivity, normal state resistivity and magnetoresistance. This was represented by the increase in the superconducting transition temperature and the upper critical field. Also, for the samples with a low level of Sb content, a clear decrease of the normal state resistivity and a substantial increase of the residual resistance ratio were observed. Furthermore, the samples showed a significant increase of the normal state magnetoresistance that appeared not to follow the Kohler's rule. The results were discussed in the frame of reduction of excess Fe at interstitial sites of β-FeSe.iron-based superconductor, superconductivity, magnetoresistance PACS: 74.25.Op,

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Section: Resultsmentioning

confidence: 98%

Superconductivity and normal state magnetoresistance in superconducting FeSe:Sb

Chu

Shao

et al. 2010

Sci. China Phys. Mech. Astron.

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“…[10]. At 773 K, there are two intermetallic phases FeSb [11] and FeSb 2 [12] * Corresponding author. in the Fe-Sb system, one intermetallic phase Fe 17 Nd 2 [13] in the Fe-Nd system and four intermetallic phases Nd 5 Sb 3 [14], Nd 4 Sb 3 [15], NdSb [16] and NdSb 2 [17] in the Nd-Sb system.…”

Section: Introductionmentioning

confidence: 99%

The 773K isothermal section of the Nd–Fe–Sb ternary system

Zeng

Qin

Nong

et al. 2007

Journal of Alloys and Compounds

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“…The refinements of the crystal structure parameters were performed with FULLPROF program [19] with the use of its internal tables. It is known that lattice constants increase with the departure from stoichiometry, and lattice constants for our sample are equal (c) or smaller (a) than the smallest constants reported [7].…”

Section: Methodsmentioning

confidence: 79%

Magnetic anisotropy in FeSb studied by 57Fe Mössbauer spectroscopy

Komędera

Jasek

Błachowski

et al. 2016

Journal of Magnetism and Magnetic Materials

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The Fe 1+x Sb compound has been synthesized close to stoichiometry with x = 0.023(8). The compound was investigated by 57 Fe Mössbauer spectroscopy in the temperature range 4.2 -300 K. The antiferromagnetic ordering temperature was found as 232 K i.e. much higher than for the less stoichiometric material. Regular iron was found to occupy two different positions in proportion 2:1. They differ by the electric quadrupole coupling constants and both of them exhibit extremely anisotropic electric field gradient tensor (EFG) with the asymmetry parameter 1   . The negative component of both EFGs is aligned with the c-axis of the hexagonal unit cell, while the positive component is aligned with the <120> direction. Hence, a model describing deviation from the NiAs P6 3 /mmc symmetry group within Fe-planes has been proposed. Spectra in the magnetically ordered state could be explained by introduction of the incommensurate spin spirals propagating through the iron atoms in the direction of the c-axis with a complex pattern of the hyperfine magnetic fields distributed within a-b plane. Hyperfine magnetic field pattern of spirals due to major regular iron is smoothed by the spin polarized itinerant electrons, while the minor regular iron exhibits hyperfine field pattern characteristic of the highly covalent bonds to the adjacent antimony atoms. The excess interstitial iron orders magnetically at the same temperature as the regular iron, and magnetic moments of these atoms are likely to form two-dimensional spin glass with moments lying in the a-b plane. The upturn of the hyperfine field for minor regular iron and interstitial iron is observed below 80 K. Magneto-elastic effects are smaller than for FeAs, however the recoilless fraction increases significantly upon transition to the magnetically ordered state.2

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Investigation of theFe1+xSb system

Cited by 26 publications

References 12 publications

Superconductivity and normal state magnetoresistance in superconducting FeSe:Sb

Superconductivity and normal state magnetoresistance in superconducting FeSe:Sb

The 773K isothermal section of the Nd–Fe–Sb ternary system

Magnetic anisotropy in FeSb studied by 57Fe Mössbauer spectroscopy

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