Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50

P. G. Radaelli; D. E. Cox; M. Marezio; S. W. Cheong; P. E. Schiffer; A. P. Ramirez

doi:10.1103/PhysRevLett.75.4488

Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50

P. G. Radaelli, D. E. Cox, M. Marezio, S. W. Cheong, P. E. Schiffer, A. P. Ramirez

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Abstract

The magnetic transitions in La1-xCaxMnO3 (x=0.25, 0.50) were studied by synchrotron x-ray and neutron powder diffraction. For x=0.25 the large V=0.13% at TC is due to the simultaneous insulator-to-metal transition. For x=0.50 below TC we observed a drastic decrease of the b axis and an increase of the a and c axes, due to a Jahn-Teller distortion of MnO6 octahedra. The ferromagnetic transition for x=0.50 is accompanied by an unusual peak broadening terminating at TN. This newly observed behavior can be explained assuming that multiple intermediate phases are simultaneously present in the sample.

Original language	English (US)
Pages (from-to)	4488-4491
Number of pages	4
Journal	Physical review letters
Volume	75
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.75.4488
State	Published - 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.75.4488

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title = "Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50",

abstract = "The magnetic transitions in La1-xCaxMnO3 (x=0.25, 0.50) were studied by synchrotron x-ray and neutron powder diffraction. For x=0.25 the large V=0.13% at TC is due to the simultaneous insulator-to-metal transition. For x=0.50 below TC we observed a drastic decrease of the b axis and an increase of the a and c axes, due to a Jahn-Teller distortion of MnO6 octahedra. The ferromagnetic transition for x=0.50 is accompanied by an unusual peak broadening terminating at TN. This newly observed behavior can be explained assuming that multiple intermediate phases are simultaneously present in the sample.",

author = "Radaelli, {P. G.} and Cox, {D. E.} and M. Marezio and Cheong, {S. W.} and Schiffer, {P. E.} and Ramirez, {A. P.}",

year = "1995",

doi = "10.1103/PhysRevLett.75.4488",

language = "English (US)",

volume = "75",

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T1 - Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50

AU - Radaelli, P. G.

AU - Cox, D. E.

AU - Marezio, M.

AU - Cheong, S. W.

AU - Schiffer, P. E.

AU - Ramirez, A. P.

PY - 1995

Y1 - 1995

N2 - The magnetic transitions in La1-xCaxMnO3 (x=0.25, 0.50) were studied by synchrotron x-ray and neutron powder diffraction. For x=0.25 the large V=0.13% at TC is due to the simultaneous insulator-to-metal transition. For x=0.50 below TC we observed a drastic decrease of the b axis and an increase of the a and c axes, due to a Jahn-Teller distortion of MnO6 octahedra. The ferromagnetic transition for x=0.50 is accompanied by an unusual peak broadening terminating at TN. This newly observed behavior can be explained assuming that multiple intermediate phases are simultaneously present in the sample.

AB - The magnetic transitions in La1-xCaxMnO3 (x=0.25, 0.50) were studied by synchrotron x-ray and neutron powder diffraction. For x=0.25 the large V=0.13% at TC is due to the simultaneous insulator-to-metal transition. For x=0.50 below TC we observed a drastic decrease of the b axis and an increase of the a and c axes, due to a Jahn-Teller distortion of MnO6 octahedra. The ferromagnetic transition for x=0.50 is accompanied by an unusual peak broadening terminating at TN. This newly observed behavior can be explained assuming that multiple intermediate phases are simultaneously present in the sample.

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Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50

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