R. S. Liu This email address is being protected from spambots. You need JavaScript enabled to view it.1 , C. H. Shen1 , T. S. Chan1 , R. Gundakaram1 , S. F. Hu2 , J. G. Lin3 and C. Y. Huang4 1Department of Chemistry National Taiwan University Taipei, Taiwan 106, R.O.C.
2National Nano Device Laboratories Hsinchu, Taiwan 300, R.O.C.
3Center for Condensed Matter Sciences National Taiwan University, Taipei, Taiwan 106, R.O.C.
4Institute of Materials and Manufacturing Chinese Culture University Taipei, Taiwan 106, R.O.C.
Received:
January 21, 2002
Accepted:
February 15, 2002
Publication Date:
March 1, 2002
Download Citation:
||https://doi.org/10.6180/jase.2002.5.1.07
The effects of structural with the isovalent chemical substitution of Ca2+ into the Sr2+ sites in new series of single perovskite La0.6(Sr0.4- xCax)MnO3 compounds (x = 0 ~ 0.4) and double perovskites (Sr2- xCax)FeMoO6 (0 ≤ x ≤ 2.0) systems are investigated. The phase transformation from rhombohedral to orthorhombic and tetragonal to monoclinic by increasing the Ca content has been observed in the La0.6(Sr0.4-xCax)MnO3 compounds (x = 0 ~ 0.4) and (Sr2-Cax)FeMoO6 (0 ≤ x ≤ 2.0) systems, respectively. All the results demonstrate that the chemical pressure and chemical size play an important role in controlling the magnetoresistance in manganites.ABSTRACT
Keywords:
La0.6(Sr0.4-xCax)MnO3, (Sr2-xCax)FeMoO6, Double Perovskites, Magnetoresistance
