Ultrafine MnWO4 nanoparticles and their magnetic properties

Ungelenk, Jan; Roming, Sabine; Adler, Peter; Schnelle, Walter; Winterlik, Jürgen; Felser, Claudia; Feldmann, Claus

doi:10.1016/j.solidstatesciences.2015.06.004

Cited by 12 publications

(11 citation statements)

References 31 publications

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“…In the case of the undoped sample, one can identify a broad transition at around 6 K which is suppressed by application of magnetic field. Similar behavior was observed in [24], where the application of a magnetic field lowered the susceptibility. The 6 K transition is also slightly suppressed without an increased field for Mo-doped sample S3.…”

Section: B Bulk Magnetizationsupporting

confidence: 77%

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Suppression of the commensurate magnetic phase in nanosized hübnerite MnWO4

et al. 2017

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Magnetic structures of nanosized (20 nm to 70 nm) powders of MnWO 4 and MnWO 4 :Mo were studied using neutron powder diffraction (NPD). Sizes and shapes of the crystallites calculated from anisotropic peak broadening of diffraction peaks were found to be orthogonal parallelepiped-like with the longest edge along the c-axis and the shortest along the b-axis. SQUID measurements indicate the presence of two magnetic transitions around 8 K and 12 K. Rietveld refinement of the NPD data below the magnetic transition was consistent with the presence of an incommensurate spiral like (ac-AF2) phase. A commensurate phase AF1 was not observed down to 2.5K for all of the samples.

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Section: B Bulk Magnetizationsupporting

confidence: 77%

“…Additionally, a different magnetization trend appeared in the temperature range of the AF1 phase. Recently a single transition at 6 K in nanosized MnWO 4 was also observed by Ungelenk et al [24].…”

Section: Fig 1 Crystal Structure Of Mnwo 4 With One Of the (010) Plsupporting

confidence: 55%

Suppression of the commensurate magnetic phase in nanosized hübnerite MnWO4

et al. 2017

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“…5), the solid is composed by irregular aggregates, with sizes ranging from 15 to 150 nm. This result provides evidence about the synthesis route in the formation of larger aggregates which grow and form regular particles, due to low surface energy, associated with the formation of these oxides during the combustion and calcination process [17][18][19][20].…”

Section: Resultsmentioning

confidence: 74%

Synthesis and Characterization of LaBa2Cu3O7−δ System by Combustion Technique

Rivera

Cuaspud

Vargas

et al. 2016

J Supercond Nov Magn

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This paper reports the synthesis and characterization of a lanthanum-barium-copper oxide, based on a LaBa 2 Cu 3 O 7 system, using a wet chemical route that enables the combustion-polymerization of citrate species, in order to generate materials with enhanced surface and textural and morphological properties for potential applications. The synthesized precursor in a form of a coordination complex was characterized by Fourier transform infrared spectroscopy (FTIR) analysis in order to evaluate the formation of homogeneous and soluble citrate species as intermediates of reaction. The morphological and structural characterizations were performed over calcined material with X-ray diffraction (XRD) and electron microscopy (scanning electron microscopy (SEM)-transmission electron microscopy (TEM)) analyses, confirming the obtention of an orthorhombic crystalline phase type Pmmm (47) in the nanometric range ≈8.9 nm. Analyses of the ceramic oxide by Raman spectroscopy and X-ray photoelectron Pátria, 156, Niterói, 24210-240, Brazil spectroscopy (XPS) allowed to perform qualitative and quantitative assessments of the material composition, showing that the final oxide is closely related to the desired composition, discarding the presence of carbonaceous residues of the synthesis process.

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“…14). 133,137 Thus, the as-prepared CoWO 4 and MnWO 4 nanoparticles can be easily attracted and moved at ambient temperature by a permanent magnet, both in suspension or as dried powder (Fig. 14).…”

Section: Polyol Synthesis and Properties Of Mwo 4 Nanoparticlesmentioning

confidence: 99%

“…Since the MnWO 4 nanoparticles exhibit a complex magnetic behaviour at low temperature, the question regarding possible multiferroic properties cannot be answered by now. 137 As no additional postsintering of powder samples is necessary for crystallization, colloidally stable suspensions and non-agglomerated nanoparticles can be easily obtained.…”

Section: Polyol Synthesis and Properties Of Mwo 4 Nanoparticlesmentioning

confidence: 99%