Transport properties of La 1 - x Ca x MnO 3 ( 0.5 ? x &lt; 1)

Zhou, H. D.; Zheng, Ren‐Kui; Li, G.; Feng, Shaojie; Liu, Fupin; Fan, Xiaojuan; Li, X.-G.

doi:10.1140/epjb/e20020115

Cited by 41 publications

(50 citation statements)

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“…[6]. T C as a function of x in the range of 0 , x , 0:5 can be almost described by a parabolic relationship, similar to the relationship between T CO and the Mn 4þ concentration n 4þ Mn in the high Ca-doped charge-ordering samples [7], and the one between superconducting transition temperature in high-temperature superconductor and carrier density n [8,9]. Fig.…”

Section: Resultsmentioning

confidence: 53%

Magnetoresistance in La1−xCaxMnO3 (0≤x<0.4)

Qian

Feng

et al. 2003

Solid State Communications

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Section: Resultsmentioning

confidence: 53%

Magnetoresistance in La1−xCaxMnO3 (0≤x<0.4)

Qian

Feng

et al. 2003

Solid State Communications

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“…28 Zhou reported shape memory behaviours of PDLLA/HA composites prepared by a physical blending method. 29,30 The hydrogen bonding, which exists between the PDLLA chains and HA particles, was responsible for the higher shape recovery compared with pristine PDLLA. The hydrogen bonds serve as physical cross-linking points and endow the nanocomposites with shape memory properties.…”

Section: Introductionmentioning

confidence: 99%

Shape memory behaviour of HA-g-PDLLA nanocomposites prepared via in situ polymerization

Gan

2014

J. Mater. Chem. B

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The shape memory properties of hydroxyapatite-graft-poly(D,L-lactide) (HA-g-PDLLA) nanocomposites were investigated in the present study. Hybrid nanocomposites with various HA proportions (5, 10, 15 and 25 wt%) were prepared via in situ grafting polymerization. It is found that the nanocomposites exhibit various shape memory (SM) performances with different HA loadings. Excellent shape memory properties were found for HA-g-PDLLA nanocomposites with 15 wt% inorganic HA proportions, observed through a well-established four-step SM programming cycle method. However, at low HA loading (including pure PDLLA), the samples experienced a severe relaxation process, which caused a plastic, irreversible deformation of the sample and resulted in a poor SM recovery ratio. In addition, the shape memory behaviours of HA25-g-PDLLA nanocomposites and HA25/PDLLA blends were compared.Due to the serious relaxation process caused by the weak interaction forces of hydrogen bonding between HA and PDLLA, the HA25/PDLLA blends had much worse shape recovery ability than the HA25-g-PDLLA nanocomposites.

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“…Many pioneers believe and demonstrate the conjugation length, donor and acceptor, and planarity of the p center are important parameters for symmetric charge displacement upon excitation, which enhance ultimately the TPA cross-section [31][32][33][34][35]. The use of organic chromophores with large TPA cross-sections [36][37][38] is our primary goal of selecting two-photon initiation polymerization (TPIP). Carbazole compounds, as is well known, exhibit rigid plane, long conjugation length, good hole transporting properties and their charge transporting complexes can create free carriers in the visible region through the photocarrier generation process [39].…”

Section: Introductionmentioning

confidence: 99%