TY - JOUR
T1 - Features of structural phase transition in La1-xSrFeO 3
AU - Mogi, M.
AU - Inoue, Y.
AU - Arao, M.
AU - Koyama, Y.
PY - 2003/10/1
Y1 - 2003/10/1
N2 - The structural phase transition in the insulating phase of La 1-xSrxFeO3 has been examined by X-ray powder diffraction. Based on the Rietveld analysis of the obtained profiles, the R3̄c-Pbnm structural transition was confirmed to take place in this oxide system. The interesting feature of the transition is that it is characterized by the appearance of the antiferroelectric displacement of the La/Sr atom, in addition to the change in the rotational-displacement pattern, R 25x+R25y+R25 z→R25x+R25y+M 3z. It is thus understood that the low-temperature Pbnm phase can be identified as an antiferroelectric phase in oxides having a simple perovskite structure.
AB - The structural phase transition in the insulating phase of La 1-xSrxFeO3 has been examined by X-ray powder diffraction. Based on the Rietveld analysis of the obtained profiles, the R3̄c-Pbnm structural transition was confirmed to take place in this oxide system. The interesting feature of the transition is that it is characterized by the appearance of the antiferroelectric displacement of the La/Sr atom, in addition to the change in the rotational-displacement pattern, R 25x+R25y+R25 z→R25x+R25y+M 3z. It is thus understood that the low-temperature Pbnm phase can be identified as an antiferroelectric phase in oxides having a simple perovskite structure.
KW - LaSrFeO
KW - Rietveld refinement
KW - Structural phase transition
KW - Transition temperature
KW - X-ray powder diffraction
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U2 - 10.1016/S0921-4534(03)01079-7
DO - 10.1016/S0921-4534(03)01079-7
M3 - Conference article
AN - SCOPUS:0042691431
SN - 0921-4534
VL - 392-396
SP - 295
EP - 299
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - PART 1
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -