Single-crystal neutron diffraction study of Nd magnetic ordering in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">NdFeO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>at low temperature

Bartolomé, J.; Palacios, E.; Kuz’min, M. D.; Bartolomé, Fernando; Sosnowska, I.; Przeniosło, R.; Sonntag, R.; Lukina, M. M.

doi:10.1103/physrevb.55.11432

Cited by 92 publications

(77 citation statements)

References 25 publications

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“…Panels (a), (c), and (e) display the fieldinduced absorption difference spectra for x=0.0, 0.09 and 0.20, substitutions that correspond to rhombohedral, triclinic, and pseudo-tetragonal crystal structures, respectively. Different magneto-optical contrast is observed depending on the Nd 3+ concentration, an indication of magnon sideband sensitivity to competing local and longrange magnetic interactions 41 . The magnon sideband intensity also increases with magnetic field.…”

Section: 27mentioning

confidence: 99%

Spin cycloid quenching in Nd3+-substituted BiFeO3

et al. 2012

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Section: 27mentioning

confidence: 99%

Spin cycloid quenching in Nd3+-substituted BiFeO3

et al. 2012

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“…27 For DyVO 3 , a complex temperature-induced V spin reorientation from C-G-C type AFM ordering occurs with the decrease of temperature. The ordering of Dy moment emerges at ≈18 K, whereas a slight ordering of Dy moment via Dy-V coupling starts at ≈36 K. 30 In the case of NdCrO 3 , while the Cr spin reorientation happens at ≈34.2 K, the Nd-Cr interaction starts to polarize the Nd moments at ≈11 K before Nd becomes long-range ordered.…”

Section: Ce L Ii Rxms Measurementsmentioning

confidence: 99%

Magnetic structures and interplay between rare-earth Ce and Fe magnetism in single-crystal CeFeAsO

Zhang

Kim

et al. 2013

Phys. Rev. B

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Neutron and synchrotron resonant x-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe and Ce sublattices in a CeFeAsO single crystal. The RXMS of magnetic reflections at the Ce L-II edge shows a magnetic transition that is specific to the Ce antiferromagnetic long-range ordering at T-Ce approximate to 4 K with short-range Ce ordering above T-Ce, whereas neutron diffraction measurements of a few magnetic reflections indicate a transition at T* approximate to 12 K with an unusual order parameter. Detailed order-parameter measurements on several magnetic reflections by neutrons show a weak anomaly at 4 K that we associate with the Ce ordering. The successive transitions at T-Ce and T* can also be clearly identified by two anomalies in heat capacity and resistivity measurements. The higher transition temperature at T* approximate to 12 K is mainly ascribed to Fe spin reorientation transition, below which Fe spins rotate uniformly and gradually in the ab plane. The Fe spin reorientation transition and short-range Ce ordering above T-Ce reflect the strong FeCe couplings prior to long-range ordering of the Ce. The evolution of the intricate magnetic structures in CeFeAsO going through T* and T-Ce is proposed. Neutron and synchrotron resonant x-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe and Ce sublattices in a CeFeAsO single crystal. The RXMS of magnetic reflections at the Ce L II edge shows a magnetic transition that is specific to the Ce antiferromagnetic long-range ordering at T Ce ≈ 4 K with short-range Ce ordering above T Ce , whereas neutron diffraction measurements of a few magnetic reflections indicate a transition at T * ≈ 12 K with an unusual order parameter. Detailed order-parameter measurements on several magnetic reflections by neutrons show a weak anomaly at 4 K that we associate with the Ce ordering. The successive transitions at T Ce and T * can also be clearly identified by two anomalies in heat capacity and resistivity measurements. The higher transition temperature at T * ≈ 12 K is mainly ascribed to Fe spin reorientation transition, below which Fe spins rotate uniformly and gradually in the ab plane. The Fe spin reorientation transition and short-range Ce ordering above T Ce reflect the strong Fe-Ce couplings prior to long-range ordering of the Ce. The evolution of the intricate magnetic structures in CeFeAsO going through T * and T Ce is proposed. Disciplines Condensed Matter Physics | Materials Science and Engineering | Metallurgy Comments

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“…Magnetic properties of NdFeO 3 are mostly determined by Fe-Fe, Fe-Nd, and Nd-Nd exchange interactions. Magnetic ordering of Fe 3+ ions creates a canted antiferromagnetic ordering of G-type below the Néel temperature at about T N 1 = 690 K and the magnetic moments of Fe 3+ exhibit spin reorientation from G x type to combination of G x and G z -type in the region from 100 K to 200 K. The moments of Nd were found to undergo a collective C-type antiferromagnetic ordering at T N 2 = 1.5 K [10]. In our paper we study crystal structure and magnetic properties of NdFeO 3 nanosize particles system.…”

Section: Introductionmentioning

confidence: 96%

Exchange Bias Effect in NdFeO_3 System of Nanoparticles

et al. 2017

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We study the effect of nanometric size on the crystal structure, magnetic environment of iron and magnetization in NdFeO3 system of nanoparticles. The average particle size of NdFeO3 nanoparticles increases with annealing at 600• C from about 15 nm to 40 nm. The smallest particles on annealed sample have size approximately 30 nm and typically have character of single crystalline samples. All samples adopt orthorhombic crystal structure, space group Pnma with lattice parameters a = 5.5817 Å, b = 7.7663 Å and c = 5.456 Å for as prepared sample. The presence of superparamagnetic particles was indicated by the Mössbauer measurements. The reduction of dimensionality induces a decrease of TN1 from 691 K to 544 K. The shift of magnetic hysteresis loop in vertical and horizontal direction was observed at low temperatures after cooling in magnetic field. We attribute such behaviour to exchange bias effect and discuss in the frame of core-shell model. IntroductionThe exchange bias (EB) was discovered more than 55 years ago, by Meiklejohn and Bean on Co/CoO coreshell nanoparticles [1], and its characteristic signature is the horizontal shift of the centre of magnetic hysteresis loop from its normal position at H = 0 to another one at H e = 0 and vertical shift which can be characterised by remnant asymmetry µ e . EB usually occurs in systems which are composed by an antiferromagnet (AFM) that is in atomic contact with a ferromagnet (FM) after the system is cooled, below the respective Néel and Curie temperatures T N and T C , in an external cooling field H cf . EB phenomena were observed in various materials like the Laves phases, intermetallic compounds and alloys, binary alloys, the Heusler alloys [2] or on layered bulk fluorometallocomplex [3], where different aspects of magnetism were focused from the EB effect. The first evidence of the EB effect in mixed-valent manganites having perovskite structure was reported in a spontaneously phase separated system Pr 1/3 Ca 2/3 MnO 3 [4] which stimulated new interest for study of the EB effect in structurally single-phase compounds. In the case of a nanoparticle (NAP) system the surface to volume ratio becomes significantly large compared to the bulk counterpart. In such a case the surface effect dominates over and core-shell model can provide good interpretation of observed phenomena. Both concepts were frequently used for interpretation of EB effects in the La 1−x Ca x MnO 3 [5, 6], Nd 0.5 Ca 0.5 MnO 3 [7] and Pr 0.5 Ca

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Single-crystal neutron diffraction study of Nd magnetic ordering inNdFeO3at low temperature

Cited by 92 publications

References 25 publications

Spin cycloid quenching in Nd3+-substituted BiFeO3

Spin cycloid quenching in Nd3+-substituted BiFeO3

Magnetic structures and interplay between rare-earth Ce and Fe magnetism in single-crystal CeFeAsO

Exchange Bias Effect in NdFeO_3 System of Nanoparticles

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