Enhanced low-field magnetoresistance in organic/inorganic glycerin/Sr2FeMoO6 composites

Wang, Jinfeng; Hu, Bin; Zhang, Ji; Gu, Zheng‐Bin; Zhang, Shan‐Tao

doi:10.1016/j.jallcom.2014.09.164

Cited by 13 publications

(16 citation statements)

References 25 publications

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“…As was expected, the LFMR can be signicantly optimized by modifying the conditions of the grain boundary such as reducing the sizes of the grains, slightly oxidizing the grain boundary, and introducing the insulator or semiconductor into the grain boundary. 5,52,53,[57][58][59][60] The experimental results show that the remarkable optimized LFMR response originates from an enhancement in the grain boundary strengthening, which can be expressed by the macroscopic resistivity values. 52,53,59,60 Based on the results shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…5,52,53,[57][58][59][60] The experimental results show that the remarkable optimized LFMR response originates from an enhancement in the grain boundary strengthening, which can be expressed by the macroscopic resistivity values. 52,53,59,60 Based on the results shown in Fig. 9, the grain boundary strengthening of the ceramics C0, C1, C2, C3, and C4 was comparable as they had similar resistivity values.…”

Section: Resultsmentioning

confidence: 99%

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Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr_(2−y)Na_yFe_(1−x)Mo_(1+x)O₆ (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Wang

Zhang

2017

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr_(2−y)Na_yFe_(1−x)Mo_(1+x)O₆ (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Wang

Zhang

2017

RSC Adv.

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“…The inorganic perovskite-type oxides show special physicochemical characteristics in ferroelectricity (Pontes et al 2017;Rana et al 2020;Cao et al 2017), piezoelectricity (Perumal et al 2019;Vu et al 2015;Xie et al 2019), dielectric (Arshad et al 2020;Zhou et al 2019;Boudad et al 2019), ferromagnetism (Yakout et al 2019;Ravi and (Wang et al 2015a;Liu et al 2007;Dwivedi et al 2015), and multiferroic (Li et al 2019b;Zhang et al 2016b;Pedro-García et al 2019). They are interesting nanomaterials for broad applications in catalysis (Grabowska 2016;Yang and Guo 2018;Hwang et al 2019;Xu et al 2019a;Ramos-Sanchez et al 2020), fuel cells (Kaur and Singh 2019;Sunarso et al 2017;Jiang 2019), ferroelectric random access memory (Gao et al 2020;Chen et al 2016a;Wang et al 2019a), electrochemical sensing and actuators (Govindasamy et al 2019a;Deganello et al 2016;Atta et al 2019;Zhang and Yi 2018;Rosa Silva et al 2019), and supercapacitors (Song et al 2020;Salguero Salas et al 2019;Lang et al 2019;George et al 2018).…”

Section: Inorganic Perovskite-type Oxidesmentioning

confidence: 99%

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

et al. 2020

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Supercapacitors are increasingly used for energy conversion and storage systems in sustainable nanotechnologies. Graphite is a conventional electrode utilized in Li-ion-based batteries, yet its specific capacitance of 372 mA h g −1 is not adequate for supercapacitor applications. Interest in supercapacitors is due to their high-energy capacity, storage for a shorter period and longer lifetime. This review compares the following materials used to fabricate supercapacitors: spinel ferrites, e.g., MFe 2 O 4 , MMoO 4 and MCo 2 O 4 where M denotes a transition metal ion; perovskite oxides; transition metals sulfides; carbon materials; and conducting polymers. The application window of perovskite can be controlled by cations in sublattice sites. Cations increase the specific capacitance because cations possess large orbital valence electrons which grow the oxygen vacancies. Electrodes made of transition metal sulfides, e.g., ZnCo 2 S 4 , display a high specific capacitance of 1269 F g −1 , which is four times higher than those of transition metals oxides, e.g., Zn-Co ferrite, of 296 F g −1. This is explained by the low charge-transfer resistance and the high ion diffusion rate of transition metals sulfides. Composites made of magnetic oxides or transition metal sulfides with conducting polymers or carbon materials have the highest capacitance activity and cyclic stability. This is attributed to oxygen and sulfur active sites which foster electrolyte penetration during cycling, and, in turn, create new active sites.

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“…The electron conguration in SFMO near the Fermi level is basically described by the localized spin-up electrons of the 3d 5 (Fe 3+ ) and the itinerant spin-down electron of the 4d 1 [11][12][13] It has been widely accepted that ASD mainly control the magnetization. 11,13,14 The itinerant electron contributed by the Mo 5+ cation mediates the ferromagnetic coupling between neighbour Fe cations via a double-exchangelike model.…”

Section: 6-8mentioning

confidence: 99%

“…Ferromagnetic SFMO material has a half-metallic nature with a 100% spin polarization at the ground state, an attractive loweld magnetoresistance response and a high T C of approximately 415 K. [1][2][3][4][5] Materials combing such functional properties are very rare. Therefore, SFMO has become one of the most promising materials for its scientic research values and potential technological applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of the itinerant electron density on the magnetization and Curie temperature of Sr₂FeMoO₆ ceramics

et al. 2018

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The itinerant electron density (n) near the Fermi level has a close correlation with the physical properties of Sr 2 FeMoO 6 . Two series of single-phase Sr (2Ày) Na y FeMoO 6 (y ¼ 0.1, 0.2, 0.3) and Sr (2Ày) Na y Fe (1Àx) Mo (1+x) O 6 (y ¼ 2x; y ¼ 0.1, 0.2, 0.3) ceramics were specially designed and the itinerant electron density (n) of them can be artificially controlled to be: n ¼ 1 À y and n ¼ 1 À y + 3x ¼ 1 + 0.5y, respectively. The corresponding crystal structure, magnetization and the ferromagnetic Curie temperature (T C ) of two subjects were investigated systematically. The X-ray diffraction analysis indicates that Sr (2Ày) Na y behavior confirms that it is the Fe/Mo ASD not n that dominantly determines the magnetization properties. Interestingly, approximately when n # 0.9, T C of Sr (2Ày) Na y FeMoO 6 (y ¼ 0.1, 0.2, 0.3) exhibits an overall increase with decreasing n, which is contrary to the T C response in electron-doped SFMO.Such abnormal T C is supposed to relate with the ratio variation of n(Mo)/n(Fe). Moreover, when n $ 1, T C of Sr (2Ày) Na y Fe (1Àx) Mo (1+x) O 6 (y ¼ 2x; y ¼ 0.3) exhibits a considerable rise of about 75 K over that of Sr (2Ày) Na y Fe (1Àx) Mo (1+x) O 6 (y ¼ 2x; y ¼ 0.1), resulting from improved n caused by introducing excess Mo into Sr (2Ày) Na y FeMoO 6 . Maybe, our work can provide an effective strategy to artificially control n and ferromagnetic T C accordingly, and provoke further investigation on the FeMo-baseddouble perovskites.

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Enhanced low-field magnetoresistance in organic/inorganic glycerin/Sr2FeMoO6 composites

Cited by 13 publications

References 25 publications

Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr_(2−y)Na_yFe_(1−x)Mo_(1+x)O₆ (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr_(2−y)Na_yFe_(1−x)Mo_(1+x)O₆ (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

Effect of the itinerant electron density on the magnetization and Curie temperature of Sr₂FeMoO₆ ceramics

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Enhanced low-field magnetoresistance in organic/inorganic glycerin/Sr2FeMoO6 composites

Cited by 13 publications

References 25 publications

Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr(2−y)NayFe(1−x)Mo(1+x)O6 (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr(2−y)NayFe(1−x)Mo(1+x)O6 (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

Effect of the itinerant electron density on the magnetization and Curie temperature of Sr2FeMoO6 ceramics

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Product

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Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr_(2−y)Na_yFe_(1−x)Mo_(1+x)O₆ (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Combined effects of hole doping and off-stoichiometry on the structures, transport, and magnetic properties of Sr_(2−y)Na_yFe_(1−x)Mo_(1+x)O₆ (x = 0/5x = y; y = 0, 0.05, 0.1, 0.15, 0.2, and 0.3)

Effect of the itinerant electron density on the magnetization and Curie temperature of Sr₂FeMoO₆ ceramics