Na Zhang
Henan Normal University
Crystal structureAnalytical chemistryParamagnetismDielectricCeramicNéel temperaturePhase transitionAntiferromagnetismValence (chemistry)Tetragonal crystal systemDipoleExchange interactionX-ray photoelectron spectroscopyMaterials scienceCondensed matter physicsBarrier layerMagnetizationOrthorhombic crystal systemNuclear magnetic resonanceOxygenCrystalDopingCurie temperaturePolaronFerroelectricityCrystallographyFerromagnetismMicrostructureDiamagnetism
1Publications
1H-index
7Citations
Publications 4
Newest
#1Guilin Song (Henan Normal University)H-Index: 2
#2Lei Chen (Henan Normal University)
Last. Na Zhang (Henan Normal University)H-Index: 1
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Abstract null null KNb1-xFexO3(x = 0–0.2) ceramics are prepared by the self-sacrificing method. The effects of Fe ion doping on the ferroelectricity, and magnetic properties of KNbO3 are studied. XRD analysis shows that all samples belong to the single-phase orthorhombic system with the space group of Amm2. The XPS test proves that Fe ions exist in the form of +2 and + 3 valence in KNbO3 sample, and the ratio of Fe2+/Fe3+ in the sample is calculated. SEM shows that Fe ions doping has a significa...
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#1Guilin Song (Henan Normal University)H-Index: 2
#2Yichen Song (SEU: Southeast University)H-Index: 1
Last. Na Zhang (Henan Normal University)H-Index: 1
view all 7 authors...
Abstract K1-xCaxNbO3 (x = 0–0.2) ceramic samples were prepared by self-sacrifice method to study the effects of Ca2+ doping on the crystal structure, dielectric properties and magnetic phase transition of KNbO3. XRD analysis showed that all samples belong to a single-phase orthogonal crystal system with a spatial group of Amm2. The valence states of K, Nb and O elements, the atomic proportion in K1-xCaxNbO3 (x = 0–0.2) samples, and the relationship between the binding energies of K, Nb and O and...
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#1Guilin Song (Henan Normal University)H-Index: 2
#2J. Su (Henan Normal University)H-Index: 2
Last. Na Zhang (Henan Normal University)H-Index: 1
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Abstract The effects of Cr3+ doping on the crystal structure, dielectric and magnetic phase transition of SmFeO3 have been investigated. The XRD pattern analysis shows that all the peaks for SmFe1-xCrxO3 samples can be indexed according to the crystal structure of pure SmFeO3 and has a fine crystal structure. The dielectric constants of SmFe1-xCrxO3 (x = 0.1–0.3) ceramics (er = 2532, 1959, 1172) are only 0.86, 0.67 and 0.41 times that of SmFeO3 (er = 2914) at 1 kHz, respectively. The change of d...
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#1Song Guilin (Henan Normal University)H-Index: 5
#2Su Jian (Henan Normal University)H-Index: 2
Last. Chang Fanggao (Henan Normal University)H-Index: 7
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Abstract Multiferroic BiFeO δ ( δ =2.67, 2.95 and 3.02) compound of various oxygen contents ( δ ) have been prepared by gel sol method. The influence of oxygen contents on the structure, electric and magnetic properties of BiFeO 3 compound has been investigated. X-ray diffraction (XRD) measurements indicate that all the samples of BiFeO δ have the same crystal structure regardless of oxygen content. The SEM micrograph reveals microstructures comprising of grains with various sizes from 200 nm to...
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