A comparison of two-layered La2.5-2xK0.5+2xMn2O7+δ and La1-xKxMnO3+δ polycrystals for the magnetoresistance effect

W. Zhong*, W. Liu, X. S. Liu, H. Y. Jiang, Chak Tong AU, Y. W. Du

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ (x = 0.075) and ABO3-type La1-xKxMnO3+δ (x = 0.075) have been prepared by a modified sol-gel method and comparisons between their structures and magnetic and electric properties have been made. Compared with the La1-xKxMnO3+δ compound, a large deviation between the metal-insulator transition temperature (Tρ) and the magnetic transition temperature (TC) and a characteristic low-temperature magnetoresistance effect under a relatively low magnetic field have been observed in the polycrystalline two-layered La2.5-2xK0.5+2xMn2O7+δ compound.

Original languageEnglish
Pages (from-to)440-446
Number of pages7
JournalPhysica Status Solidi (A) Applied Research
Issue number2
Publication statusPublished - Jan 2003

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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