Mössbauer spectroscopy investigation of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Immm</mml:mi></mml:math>phase nickelates<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Gd</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">BaNiO</mml:mi></mml:mrow><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:m

Stewart, G. A.; Harker, S. J.; Strecker, M.; Wortmann, G.

doi:10.1103/physrevb.61.6220

Cited by 15 publications

(7 citation statements)

References 17 publications

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“…Magnetic, Mössbauer, and crystal-field studies of Tm 3+ ions in nickelates Tm 2 BaNiO 5. and Tm 2 BaCuO 5 by Stewart et al [33][34][35] require detailed reconsideration. These ion-host systems present more complicated cases than those dealt with in this paper since there exists two phases Immm and Pnma differing in the local site symmetry, i.e.…”

Section: Discussionmentioning

confidence: 93%

“…Thus monoclinic standardization must be employed first before such CFP sets may be meaningfully compared. Reanalysis of the CFP sets for Tm 3+ ions in Tm 2 BaNiO 5 and Tm 2 BaCuO 5 [33][34][35] will be dealt with in a follow-up paper with focus on low symmetry aspects.…”

Section: Discussionmentioning

confidence: 99%

“…orthorhombic and monoclinic, respectively. The non-standard and standard monoclinic CFP sets [33][34][35] expressed in the extended Stevens notation require additional specific units and notation conversions. Superposition model calculations carried out in [33] with three different radial dependencies have generated three alternative sets of monoclinic CF parameters.…”

Section: Discussionmentioning

confidence: 99%

“…We intend to carry out superposition model [37,38] calculations for this ion-host system in order to assess validity of the orthorhombic approximation used in CF analysis [36] instead of the actual monoclinic site symmetry. Procedure for modelling of CFPs using superposition model appropriate for low symmetry cases [33][34][35][36] will then be proposed.…”

Section: Discussionmentioning

confidence: 99%

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Alternative crystal-field parameters for rare-earth ions obtained from various techniques: II. Reanalysis of spectroscopic data for Eu3+ and Er3+ ions in RE2BaXO5 (X=Co, Cu, Ni, Zn) high temperature superconductors and related systems

Rudowicz

Gnutek

Lewandowska

2009

Journal of Alloys and Compounds

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Alternative crystal-field parameters for rare-earth ions obtained from various techniques: II. Reanalysis of spectroscopic data for Eu3+ and Er3+ ions in RE2BaXO5 (X=Co, Cu, Ni, Zn) high temperature superconductors and related systems

Rudowicz

Gnutek

Lewandowska

2009

Journal of Alloys and Compounds

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“…2,[9][10][11] In particular, Gd 2 BaNiO 5 first becomes antiferromagnetic at T N = 58 K and then undergoes a magnetic reorientation at T R = 23 K, where the nickel magnetic moments Ni rotate from the a axis ͑ Ni ʈ a͒ toward the b axis ͑ Ni ʈ b͒. 10,[12][13][14] Inelastic neutron-scattering studies of Pr 2 BaNiO 5 and Nd 2 BaNiO 5 ͑Ref. 11͒ have revealed well-defined 1D Haldane-gap modes propagating along the Ni chains both above and below the Néel temperature.…”

Section: Introductionmentioning

confidence: 99%

Infrared study of lattice and magnetic dynamics in a spin-chain compoundGd2BaNiO5

et al. 2010

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We present infrared spectra of Gd 2 BaNiO 5 , which is isostructural to a prototype S = 1 Haldane compound Y 2 BaNiO 5 containing Ni 2+ chains, in the spectral range 2 meV-0.55 eV. Unlike Y 2 BaNiO 5 , the studied compound contains magnetic rare-earth sublattices and orders antiferromagnetically at T N = 58 K. Detailed information on optical phonons is given. Temperature dependences of frequencies and half widths for the two lowest-frequency phonons polarized along the Ni-chain direction evidence the interaction of these lattice vibrations with magnetic excitations. With the help of lattice-dynamics calculations, we find relative displacement vectors of ions for all the phonon modes and use them to discuss the mechanism of phonon-magnon interaction. The optical spectra exhibit a broad absorption continuum for radiation polarized along the chains, probably of magnetic origin, gradually decreasing with lowering temperature. A new mode at about 30 cm −1 polarized along the chains ͑a axis͒ emerges below ϳ150 K. A midinfrared absorption peak at 1306 cm −1 ͑0.16 eV͒ is observed and found to sharpen and shift significantly at T N . We argue that it can be attributed to a phonon-assisted magnetic absorption and discuss its nature in the framework of the Lorenzana-Sawatzky-Eder model.

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Mössbauer Spectroscopy on rare Earth-Based Oxides

Gubbens

2016

Handbook of Magnetic Materials

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Mössbauer spectroscopy investigation of theImmmphase nickelatesGd2BaNiO5

Cited by 15 publications

References 17 publications

Alternative crystal-field parameters for rare-earth ions obtained from various techniques: II. Reanalysis of spectroscopic data for Eu3+ and Er3+ ions in RE2BaXO5 (X=Co, Cu, Ni, Zn) high temperature superconductors and related systems

Alternative crystal-field parameters for rare-earth ions obtained from various techniques: II. Reanalysis of spectroscopic data for Eu3+ and Er3+ ions in RE2BaXO5 (X=Co, Cu, Ni, Zn) high temperature superconductors and related systems

Infrared study of lattice and magnetic dynamics in a spin-chain compoundGd2BaNiO5

Mössbauer Spectroscopy on rare Earth-Based Oxides

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