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Influence of Tb on easy magnetization direction and magnetostriction of ferromagnetic Laves phase GdFe_2 compounds

Chinese Physics B 2016年第9期25卷 452-457页

作者： adil murtaza 杨森周超宋晓平 School of Science MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterState Key Laboratory for Mechanical Behaviour of MaterialsXi'an Jiaotong University

The crystal structure,magnetization,and spontaneous magnetostriction of ferromagnetic Laves phase Gd Fe2 compound have been *** resolution synchrotron x-ray diffraction（XRD） analysis shows that Gd Fe2 has a lower cubic symmetry with easy magnetization direction（EMD） along [100] below Curie temperature *** replacement of Gd with a small amount of Tb changes the EMD to [111].The Curie temperature decreases while the field dependence of the saturation magnetization（Ms） measured in temperature range 5–300 K varies with increasing Tb *** Hc increases with increasing Tb concentration and decays exponentially as temperature *** anisotropy in Gd Fe2 is so weak that some of the rare-earth substitution plays an important role in determining the easy direction of magnetization in GdFe_*** calculated magnetostrictive constant λ100 shows a small value of 37×10^（-6）.This value agrees well with experimental data 30×10^（-6）.Under a relatively small magnetic field,GdFe_2 exhibits a V-shaped positive magnetostriction *** the field is further increased,the crystal exhibits a negative magnetostriction *** phenomenon has been discussed in term of magnetic domain ***,magnetostriction increases with increasing Tb *** work leads to a simple and unified mesoscopic explanation for magnetostriction in *** may also provide insight for developing novel functional materials.

关键词： crystal structure magnetic anisotropy lattice distortion magnetostriction

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Supramolecular Nanohelix Fabricated by Pillararene-Based Host–Guest System for Chirality Amplification, Transfer, and Circularly Polarized Luminescence in Water

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CCS Chemistry 2022年第10期4卷 3426-3439页

作者： Krishnasamy Velmurugan adil murtaza Azhar Saeed Jianing Li Kaiya Wang Minzan Zuo Qian Liu Xiao-Yu Hu College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106 School of Physics MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Jiaotong UniversityXi’an 710049 State Key Laboratory for Mechanical Behaviour of Materials Shaanxi International Research Center for Soft MatterXi’an Jiaotong UniversityXi’an 710049

Amplified chirality and Förster resonance energy transfer(FRET)-assisted chirality transfer frommolecular to nanoscale level have been shown to play a vital role in co-assembled nanohelix for potential energy transfer in biological ***,we have constructed a chiral host–guest complex donor system for chiral amplification via induced chirality of pillar[5]arene host and loaded it with an achiral dye acceptor to demonstrate how chirality-assisted excitation energy transfer occurred in the supramolecular nanohelix system in an aqueous medium.

关键词： host–guest interaction supramolecular chirality chirality transfer circularly polarized luminescence supramolecular self-assembly

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Effects of lead(Pb)-induced oxidative stress on morphological and physio-biochemical properties of rice

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BIOCELL 2021年第5期45卷 1413-1423页

作者： murtaza KHAN IBA NAZAR IBRAHIM AL AZZAWI MUHAMMAD IMRAN adil HUSSAIN BONG-GYU MUN ANJALI PANDE BYUNG-WOOK YUN Laboratory of Plant Functional Genomics School of Applied BiosciencesKyungpook National UniversityDaegu41566South Korea Ministry of Agriculture State Company for Agriculture Supplies Baghdad10064Iraq Laboratory of Crop Physiology School of Applied BiosciencesKyungpook National UniversityDaegu41566South Korea Department of Entomology Abdul Wali Khan University MardanKhyber Pakhtunkhwa23200Pakistan

In rice,high concentration of lead(Pb)can cause phyto-toxicity affecting several physiological *** of rice varieties that are resistant to Pb-induced oxidative stress is an important management strategy in Pb-contaminated *** the current study,we evaluated four different rice cultivars for their response to Pb-induced *** japonica type cultivars X-Jigna,Ediget,and Furat,and one Indica type cultivar Amber 33 were grown in soil containing different Pb concentrations(0 mM,0.6 mM,and 1.2 mM).The soil was treated with 0 mM or 0.6 mM or 1.2 mM Pb solution one month prior to rice seedling ***,four-week-old rice seedlings were transplanted into the treated soil and their responses were observed until *** data revealed that a highest concentration of Pb(1.2 mM)induced significant reduction in agronomic traits such as plant height,number of tillers per plant,number of panicles per plant,and number of spikelets per panicle in all the rice ***,least reduction in the agronomic traits was observed in X-Jigna,whereas the highest reduction in the agronomic traits was observed in *** activity of catalase(CAT),peroxidase(POD),polyphenol oxidase(PPO),and superoxide dismutase(SOD),was evaluated along with the accumulation of superoxide ions(O2.-),protein,proline,chlorophyll,sucrose,glucose,and fructose contents in all the rice cultivars.A significant increase in antioxidant activity and in the accumulation of proline and sucrose contents with the least reduction in the chlorophyll and protein contents was observed in X-Jigna suggesting that X-Jigna is the most tolerant among all the rice cultivars tested against *** the other hand,non-significant and slightly significant increase in the antioxidant activity,less accumulation of proline and sucrose contents,and higher reduction in the chlorophyll and protein contents was observed in Ediget,which further suggest that Ediget is the most s

关键词： Lead(Pb)toxicity Oxidative stress Morphological and physio-biochemical properties of rice

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