Abstract
The crystal structure of (Ba1-xLax)[Mg(1+x)/3Nb(2-x)/3]O 3 (BLMN) ceramics with 0 ≤ × ≤ 1 was investigated using X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). When the La content, x, was above 0.1, the 1:2 ordered hexagonal structure found in Ba(Mg1/3Nb2/3)O3 (BMN) was transformed into the 1:1 ordered cubic structure. The 1:1 ordered cubic structure was maintained up to x = 0.7. When x exceeded 0.7, however, BLMN exhibited a 1:1 ordered monoclinic structure, rather than a 1:1 ordered cubic structure. La(Mg2/3Nb1/3)O3 (LMN) has a 1:1 ordered monoclinic P21/n structure with a = 5.6004 Å, b = 5.6414 Å, c = 7.9346 Å, and β = 89.9819°. The monoclinic LMN has the in-phase and the anti-phase tilt of oxygen octahedra. The anti-parallel shift of A-site cations was also found in LMN.
| Original language | English |
|---|---|
| Pages (from-to) | 621-628 |
| Number of pages | 8 |
| Journal | Journal of Materials Science |
| Volume | 38 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2003 Feb 1 |
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- Materials Science(all)
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Crystal structure of (Ba1-xLax) [Mg(1+x)/3Nb(2-x)/3]O3 ceramics. / Paik, Jong Hoo; Nahm, Sahn; Kim, Young Sik; Park, Hyun Min; Lee, Hwack Joo; Byun, Jae Dong.
In: Journal of Materials Science, Vol. 38, No. 3, 01.02.2003, p. 621-628.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Crystal structure of (Ba1-xLax) [Mg(1+x)/3Nb(2-x)/3]O3 ceramics
AU - Paik, Jong Hoo
AU - Nahm, Sahn
AU - Kim, Young Sik
AU - Park, Hyun Min
AU - Lee, Hwack Joo
AU - Byun, Jae Dong
PY - 2003/2/1
Y1 - 2003/2/1
N2 - The crystal structure of (Ba1-xLax)[Mg(1+x)/3Nb(2-x)/3]O 3 (BLMN) ceramics with 0 ≤ × ≤ 1 was investigated using X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). When the La content, x, was above 0.1, the 1:2 ordered hexagonal structure found in Ba(Mg1/3Nb2/3)O3 (BMN) was transformed into the 1:1 ordered cubic structure. The 1:1 ordered cubic structure was maintained up to x = 0.7. When x exceeded 0.7, however, BLMN exhibited a 1:1 ordered monoclinic structure, rather than a 1:1 ordered cubic structure. La(Mg2/3Nb1/3)O3 (LMN) has a 1:1 ordered monoclinic P21/n structure with a = 5.6004 Å, b = 5.6414 Å, c = 7.9346 Å, and β = 89.9819°. The monoclinic LMN has the in-phase and the anti-phase tilt of oxygen octahedra. The anti-parallel shift of A-site cations was also found in LMN.
AB - The crystal structure of (Ba1-xLax)[Mg(1+x)/3Nb(2-x)/3]O 3 (BLMN) ceramics with 0 ≤ × ≤ 1 was investigated using X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). When the La content, x, was above 0.1, the 1:2 ordered hexagonal structure found in Ba(Mg1/3Nb2/3)O3 (BMN) was transformed into the 1:1 ordered cubic structure. The 1:1 ordered cubic structure was maintained up to x = 0.7. When x exceeded 0.7, however, BLMN exhibited a 1:1 ordered monoclinic structure, rather than a 1:1 ordered cubic structure. La(Mg2/3Nb1/3)O3 (LMN) has a 1:1 ordered monoclinic P21/n structure with a = 5.6004 Å, b = 5.6414 Å, c = 7.9346 Å, and β = 89.9819°. The monoclinic LMN has the in-phase and the anti-phase tilt of oxygen octahedra. The anti-parallel shift of A-site cations was also found in LMN.
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U2 - 10.1023/A:1021822614373
DO - 10.1023/A:1021822614373
M3 - Article
AN - SCOPUS:0037331895
VL - 38
SP - 621
EP - 628
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 3
ER -