Large lattice compression coefficient and uniaxial piezoresistance in CMR perovskite La1-xSrxMaO3 (0.15 ≤ x ≤ 0.25)

N. Zhang*, W. P. Ding, Zaibing Guo, W. Zhong, D. Y. Xing, Y. W. Du, G. Li, Y. Zheng

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Scopus citations

    Abstract

    Using a method of in-situ pressing X-ray diffraction, a uniaxial pressure-induced unusual change of lattice parameters and a remarkable crystal structural distortion have been observed in the perovskite-type La-Sr-Mn-O system. The pressure coefficient of lattice parameter in [200] orientation, i.e. dlndMn-O-Mn/dP, can reach about 3.76 × 10-4/Map for La0.85Sr0.15MnO3. Under a uniaxial pressure of only 20∼30 MPa, a giant piezoresistance and an evident increase of Tp, the onset of the metal-semiconductor-like (M-S) transition have also been obtained. These effects suggest that the structure of colossal magnetoresistance perovskites is very flexible and their transport properties are structurally sensitive.

    Original languageEnglish (US)
    Pages (from-to)461-465
    Number of pages5
    JournalZeitschrift fur Physik B-Condensed Matter
    Volume102
    Issue number4
    DOIs
    StatePublished - Jan 1 1997

    ASJC Scopus subject areas

    • Condensed Matter Physics

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