Abstract
The investigation of the solid solution Ce1-xAxTiO3 (A = Sr, Ba) was undertaken with the aim to understand the magnetic and electronic properties as a function of alkaline earth doping. The solid solutions Ce1-xAxTiO3 (A = Sr, Ba; 0.0 ≤ x ≤ 0.8) have been prepared by arc melting stoichiometric amounts of CeTiO3 and ATiO3 under argon. Single-phase samples of Ce1-xSrxTiO3 can be made for the entire stoichiometry range. However, there is phase separation in samples of Ce1-xBaxTiO3 for high values of x. The polycrystalline samples have been characterized using microprobe, thermal gravimetric analysis, powder X-ray diffraction, Ce L-edge X-ray absorption fine structure, temperature- and field-dependent magnetization, and dc electrical resistivity. The Ce1-xSrxTiO3 samples crystallize in the orthorhombic space groups Pbnm (x ≤ 0.4) and Ibmm (0.4 ≤ x ≤ 0.8). The Ce1-xBaxTiO3 samples crystallize in the orthorhombic space groups Pbnm (x ≤ 0.2) and Ibmm (0.2 ≤ x ≤ 0.6). The Ce0.2Ba0.8TiO3 sample is biphasic containing an orthorhombic phase (Ibmm) and a hexagonal BaTiO3-x phase. Ce XANES (X-ray absorption near-edge structure) data show that in all samples the Ce valence is 3+. The samples Ce1-xSrxTiO3 (x = 0.0, 0.2) exhibit a ferromagnetic component below 135 K due to coupling between Ce and Ti moments. The temperature dependent resistivity measurement on polycrystalline CeTiO3 shows it to be a small gap (0.005 eV) semiconductor. The Ce1-xSrxTiO3 samples are metallic up to x = 0.8 while the Ce1-xBaxTiO3 samples are metallic for x = 0.2, 0.4.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 182-191 |
| Number of pages | 10 |
| Journal | Chemistry of Materials |
| Volume | 5 |
| Issue number | 2 |
| State | Published - 1993 |
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ASJC Scopus subject areas
- Materials Chemistry
- Materials Science(all)
Cite this
Synthesis, structure, and characteization of Ce1-xAxTiO3 (0.0 ≤ x ≤ 0.8; a = Sr, Ba). / Sunstrom IV, Joseph E.; Kauzlarich, Susan M.; Antonio, Mark R.
In: Chemistry of Materials, Vol. 5, No. 2, 1993, p. 182-191.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis, structure, and characteization of Ce1-xAxTiO3 (0.0 ≤ x ≤ 0.8; a = Sr, Ba)
AU - Sunstrom IV, Joseph E.
AU - Kauzlarich, Susan M.
AU - Antonio, Mark R.
PY - 1993
Y1 - 1993
N2 - The investigation of the solid solution Ce1-xAxTiO3 (A = Sr, Ba) was undertaken with the aim to understand the magnetic and electronic properties as a function of alkaline earth doping. The solid solutions Ce1-xAxTiO3 (A = Sr, Ba; 0.0 ≤ x ≤ 0.8) have been prepared by arc melting stoichiometric amounts of CeTiO3 and ATiO3 under argon. Single-phase samples of Ce1-xSrxTiO3 can be made for the entire stoichiometry range. However, there is phase separation in samples of Ce1-xBaxTiO3 for high values of x. The polycrystalline samples have been characterized using microprobe, thermal gravimetric analysis, powder X-ray diffraction, Ce L-edge X-ray absorption fine structure, temperature- and field-dependent magnetization, and dc electrical resistivity. The Ce1-xSrxTiO3 samples crystallize in the orthorhombic space groups Pbnm (x ≤ 0.4) and Ibmm (0.4 ≤ x ≤ 0.8). The Ce1-xBaxTiO3 samples crystallize in the orthorhombic space groups Pbnm (x ≤ 0.2) and Ibmm (0.2 ≤ x ≤ 0.6). The Ce0.2Ba0.8TiO3 sample is biphasic containing an orthorhombic phase (Ibmm) and a hexagonal BaTiO3-x phase. Ce XANES (X-ray absorption near-edge structure) data show that in all samples the Ce valence is 3+. The samples Ce1-xSrxTiO3 (x = 0.0, 0.2) exhibit a ferromagnetic component below 135 K due to coupling between Ce and Ti moments. The temperature dependent resistivity measurement on polycrystalline CeTiO3 shows it to be a small gap (0.005 eV) semiconductor. The Ce1-xSrxTiO3 samples are metallic up to x = 0.8 while the Ce1-xBaxTiO3 samples are metallic for x = 0.2, 0.4.
AB - The investigation of the solid solution Ce1-xAxTiO3 (A = Sr, Ba) was undertaken with the aim to understand the magnetic and electronic properties as a function of alkaline earth doping. The solid solutions Ce1-xAxTiO3 (A = Sr, Ba; 0.0 ≤ x ≤ 0.8) have been prepared by arc melting stoichiometric amounts of CeTiO3 and ATiO3 under argon. Single-phase samples of Ce1-xSrxTiO3 can be made for the entire stoichiometry range. However, there is phase separation in samples of Ce1-xBaxTiO3 for high values of x. The polycrystalline samples have been characterized using microprobe, thermal gravimetric analysis, powder X-ray diffraction, Ce L-edge X-ray absorption fine structure, temperature- and field-dependent magnetization, and dc electrical resistivity. The Ce1-xSrxTiO3 samples crystallize in the orthorhombic space groups Pbnm (x ≤ 0.4) and Ibmm (0.4 ≤ x ≤ 0.8). The Ce1-xBaxTiO3 samples crystallize in the orthorhombic space groups Pbnm (x ≤ 0.2) and Ibmm (0.2 ≤ x ≤ 0.6). The Ce0.2Ba0.8TiO3 sample is biphasic containing an orthorhombic phase (Ibmm) and a hexagonal BaTiO3-x phase. Ce XANES (X-ray absorption near-edge structure) data show that in all samples the Ce valence is 3+. The samples Ce1-xSrxTiO3 (x = 0.0, 0.2) exhibit a ferromagnetic component below 135 K due to coupling between Ce and Ti moments. The temperature dependent resistivity measurement on polycrystalline CeTiO3 shows it to be a small gap (0.005 eV) semiconductor. The Ce1-xSrxTiO3 samples are metallic up to x = 0.8 while the Ce1-xBaxTiO3 samples are metallic for x = 0.2, 0.4.
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M3 - Article
AN - SCOPUS:0000804105
VL - 5
SP - 182
EP - 191
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 2
ER -