Hydrothermal synthesis of Nd 2 O 3 nanorods

A La0.67Sr0.33MnO3 (LSMO) ferromagnetic layer and a Nd3+/Hf4+ co-substituted Bi4Ti3O12 (Bi3.15Nd0.85Ti3-xHfxO12 (BNTHx, x = 0, 0.025, 0.05, 0.1 and 0.15)) ferroelectric layer were successively deposited onto the (00 l)-oriented LaNiO3 (LNO) layer buffered (001) Si substrate via all chemical solution deposition (CSD) method. As a result, the BNTHx/LSMO ferromagnetic-ferroelectric composite films integrated on Si substrate exhibit high c-axis orientation. The Nd3+/Hf4+ co-substituted BNTHx films have the lower leakage current and the better ferroelectric properties than the mono-substituted Bi4Ti3O12 (Bi3.15Nd0.85Ti3O12 and Bi4Ti2.95Hf0.05O12) films. In particular, the BNTH0.05/LSMO/LNO film has the lowest leakage current density of 2.5 × 10−7 A/cm2 at 200 kV/cm, and the highest remnant polarization (Pr) of 27.3 μC/cm2. The BNTH0.05/LSMO/LNO composite film also exhibits the soft ferromagnetism characteristics with a high saturated magnetization of 258 emu/cm3 at 300 K, and the excellent magnetoelectric (ME) effect. The variations of ME voltage coefficient α E values with DC bias magnetic field H bias shows that the BNTH0.05/LSMO/LNO film has the high α E value at near zero H bias. Moreover, at H bias = 0 Oe, the α E value gradually increases from zero with the increasing of the AC magnetic field frequency, and eventually reaches about 18.9 V/cm·Oe at 100 kHz, suggesting the existence of self-biased ME effect.

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“…4c). They were consistent with the data of Nd 2 O 3 43 . Figure 4(d) illustrates the fine peaks attributed to Ti2p core levels.…”

Section: Resultssupporting

confidence: 92%

Integration of c-axis oriented Bi3.15Nd0.85Ti2.95Hf0.05O12/La0.67Sr0.33MnO3 ferromagnetic-ferroelectric composite film on Si substrate

Duan

Cui

Zhao

et al. 2017

Sci Rep

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“…28, 32, 46 and 55° and perovskite phases (NdAlO 3 and/or NdCoO 3 at 2θ ca. 24, 34, 42, 48, 60 and 71°) . For the samples with x=0.75 and 1, CoAlO y was still present, though with a very low intensity in comparison to Nd‐containing phases.…”

Section: Resultsmentioning

confidence: 96%

“…The pattern of the Co 0.8 Al 0.2 calcined sample ( Figure 1b) showed well-defined crystalline phases with Bragg reflections located at 2θ ca. 19,32,37,39,45,56,59,65, 77°, related to Co 3 O 4 , CoAl 2 O 4 and/or Co 2 AlO 4 spinels. [16] A decrease in the crystallinity of the spinel phases was observed after addition of low Nd amount (x � 0.25).…”

Section: Resultsmentioning

confidence: 99%

Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Jabłońska

Nocuń

et al. 2019

ChemCatChem

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Cu−Al and Co−Al (M/Al=0.8/0.2, molar ratio; M=Cu or Co) mixed metal oxides showed a moderate activity in N2O decomposition (deN2O) with full conversion at about 500–550 °C. Addition of Nd modified the physico‐chemical and catalytic properties of both Cu−Al and Co−Al materials, though an optimal Nd loading was required. The addition of Nd in Cu0.8Al0.2 and Co0.8Al0.2 with Nd/Co(Cu)/Al = 0.5/0.8/0.2 molar ratio, improved significantly their catalytic activity. In particular, the temperatures needed for full N2O conversion were 100 °C lower than those of the bare materials. Furthermore, the most active Nd0.5Co0.8Al0.2 catalyst exhibited a stable 60 % N2O conversion at 450 °C for 50 h in presence of NO (200 ppm), O2 (20,000 ppm) and H2O (2500 ppm). The enhancement in the activity of both Cu‐ and Co‐containing materials was related to the formation of CuNd2O4 for Nd0.5Cu0.8Al0.2 and NdCoO3 for Nd0.5Co0.8Al0.2. The presence of CuNd2O4 or NdCoO3 accounted for changes in redox properties, e. g., easier reduction or faster release of oxygen, and in turn an increased catalyst activity in deN2O. The investigation of rare earth‐based catalysts for deN2O is limited in the scientific literature, while a comprehensive understanding of the involved active species may facilitate a knowledge‐based catalyst optimization.

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“…For the powders, the broad O 1s band contains two components at 529.9 and 532.0 eV. The lower and higher binding energy peaks are attributed to the O of Nd, Nb―O, and OH − vacancies, respectively . In the films, the O 1s peaks at 529.0, 531.5, and 532.9 eV are attributed to the lattice oxygen of Nd, Nb―O species, OH‐, and hydrocarbonate species.…”

Section: Resultsmentioning

confidence: 99%

“…Nd 2 O 3 has attracted a great attention of researchers in various fields including photonics, advanced materials, and protective coatings . The microstructural changes in Nd 2 O 3 were examined employing XPS studies . The experimental XPS spectra of neodymium trihydroxides (Nd (OH) 3 ), at Nd 3+ 3d and O 1s (OH − ) levels are reported by Mullica et al Two envelopes correspond to two final states: final state I, Nd 3+ (3d 5/2 ) and final state II, Nd 3+ (3d 3/2 ).…”

Section: Introductionmentioning

confidence: 99%

X‐ray photoelectron spectroscopy study of neodymium niobate and tantalate precursors and thin films

Bruncková

Kolev

Kaňuchová

2018

Surface & Interface Analysis

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Neodymium niobate NdNbO4 (NNO) and tantalate NdTaO4 (NTO) thin films (~100 nm) were prepared by sol‐gel/spin‐coating process on Al2O3 substrate with LaNbO4/PbZrO3 interlayer and annealing at 1000°C. Surface chemistry was investigated by X‐ray photoelectron spectroscopy (XPS). The core‐level XPS studies of sol‐gel NNO and NTO were performed for the first time. The binding energy differences Δ(O―Nb) and Δ(O―Ta) were used to characterize average energies of Nb―O bonding in NNO (322.9 eV) and Ta―O bonding in NTO (504.2 eV). The XPS demonstrated single valence state of Nd (Nd3+) in precursors. Nd concentration (at. %) decreases from 22% in precursors to 7% in films considering the substrate contains C, Al, Si, Pb, and Zr elements (37%) at Nb or Ta (5%) and O (51%). The X‐ray diffraction analyses verified formation of the monoclinic (M‐NdNbO4 or M′‐NdTaO4), orthorhombic (O‐NdNbO4) and tetragonal (T‐NdTaO4) phases in precursors and films. Single valence state of Nd3+ was confirmed in these films designed for the application in environmental electrolytic thin film devices.

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Hydrothermal synthesis of Nd 2 O 3 nanorods

Cited by 48 publications

References 41 publications

Integration of c-axis oriented Bi3.15Nd0.85Ti2.95Hf0.05O12/La0.67Sr0.33MnO3 ferromagnetic-ferroelectric composite film on Si substrate

Integration of c-axis oriented Bi3.15Nd0.85Ti2.95Hf0.05O12/La0.67Sr0.33MnO3 ferromagnetic-ferroelectric composite film on Si substrate

Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

X‐ray photoelectron spectroscopy study of neodymium niobate and tantalate precursors and thin films

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Hydrothermal synthesis of Nd 2 O 3 nanorods

Cited by 48 publications

References 41 publications

Integration of c-axis oriented Bi3.15Nd0.85Ti2.95Hf0.05O12/La0.67Sr0.33MnO3 ferromagnetic-ferroelectric composite film on Si substrate

Integration of c-axis oriented Bi3.15Nd0.85Ti2.95Hf0.05O12/La0.67Sr0.33MnO3 ferromagnetic-ferroelectric composite film on Si substrate

Effect of Neodymium on the Physico‐chemical Properties and N2O Decomposition Activity of Co(Cu)−Al Mixed Oxides

X‐ray photoelectron spectroscopy study of neodymium niobate and tantalate precursors and thin films

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Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides