Abstract
The electronic states of Sr 1-xNd xMnO 3 with the simple perovskite structure are characterized by a three-dimensional highly-correlated electronic system. To understand the detailed features of the A- and CE-type antiferromagnetic states in this system, their crystallographic features for x = 0.47, 0.48, and 0.50 have been investigated mainly by both x-ray powder diffraction and transmission electron microscopy. It was found at room temperature that the crystal structure for x = 0.47 was determined to have the monoclinic C2/m symmetry, while the orthorhombic Imma structure was confirmed for x = 0.48 and 0.50. The in-situ observation for x = 0.47 indicated that, in the heating process from room temperature, the C2/m-to-Imma transition occurred in the paramagnetic state, and that the A-type antiferromagnetic state appeared below about 200 K on cooling. In addition, the cooling from room temperature for x = 0.48 and 0.50 resulted in the direct transitions from the orthorhombic Imma state to the A- and CE-type antiferromagnetic states, respectively. Based on these features, we simply discussed the physical origin of the appearance of the paramagnetic state with the monoclinic symmetry for x = 0.47.
| Original language | English |
|---|---|
| Title of host publication | Advanced Materials Research |
| Pages | 532-537 |
| Number of pages | 6 |
| Volume | 409 |
| DOIs | |
| Publication status | Published - 2012 |
| Event | 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC Duration: 2011 Aug 1 → 2011 Aug 5 |
Publication series
| Name | Advanced Materials Research |
|---|---|
| Volume | 409 |
| ISSN (Print) | 10226680 |
Other
| Other | 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 |
|---|---|
| City | Quebec City, QC |
| Period | 11/8/1 → 11/8/5 |
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Keywords
- A-type antiferromagnetic state
- Manganite
- Simple perovskite
- Transmission electron microscopy
ASJC Scopus subject areas
- Engineering(all)
Cite this
Crystallographic features of the A-type and CE-type antiferromagnetic states in the simple-perovskite manganite system Sr 1-xNd xMnO 3 . / Onezawa, Yusuke; Inoue, Yasuhide; Arao, Masazumi; Koyama, Yasumasa.
Advanced Materials Research. Vol. 409 2012. p. 532-537 (Advanced Materials Research; Vol. 409).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Crystallographic features of the A-type and CE-type antiferromagnetic states in the simple-perovskite manganite system Sr 1-xNd xMnO 3
AU - Onezawa, Yusuke
AU - Inoue, Yasuhide
AU - Arao, Masazumi
AU - Koyama, Yasumasa
PY - 2012
Y1 - 2012
N2 - The electronic states of Sr 1-xNd xMnO 3 with the simple perovskite structure are characterized by a three-dimensional highly-correlated electronic system. To understand the detailed features of the A- and CE-type antiferromagnetic states in this system, their crystallographic features for x = 0.47, 0.48, and 0.50 have been investigated mainly by both x-ray powder diffraction and transmission electron microscopy. It was found at room temperature that the crystal structure for x = 0.47 was determined to have the monoclinic C2/m symmetry, while the orthorhombic Imma structure was confirmed for x = 0.48 and 0.50. The in-situ observation for x = 0.47 indicated that, in the heating process from room temperature, the C2/m-to-Imma transition occurred in the paramagnetic state, and that the A-type antiferromagnetic state appeared below about 200 K on cooling. In addition, the cooling from room temperature for x = 0.48 and 0.50 resulted in the direct transitions from the orthorhombic Imma state to the A- and CE-type antiferromagnetic states, respectively. Based on these features, we simply discussed the physical origin of the appearance of the paramagnetic state with the monoclinic symmetry for x = 0.47.
AB - The electronic states of Sr 1-xNd xMnO 3 with the simple perovskite structure are characterized by a three-dimensional highly-correlated electronic system. To understand the detailed features of the A- and CE-type antiferromagnetic states in this system, their crystallographic features for x = 0.47, 0.48, and 0.50 have been investigated mainly by both x-ray powder diffraction and transmission electron microscopy. It was found at room temperature that the crystal structure for x = 0.47 was determined to have the monoclinic C2/m symmetry, while the orthorhombic Imma structure was confirmed for x = 0.48 and 0.50. The in-situ observation for x = 0.47 indicated that, in the heating process from room temperature, the C2/m-to-Imma transition occurred in the paramagnetic state, and that the A-type antiferromagnetic state appeared below about 200 K on cooling. In addition, the cooling from room temperature for x = 0.48 and 0.50 resulted in the direct transitions from the orthorhombic Imma state to the A- and CE-type antiferromagnetic states, respectively. Based on these features, we simply discussed the physical origin of the appearance of the paramagnetic state with the monoclinic symmetry for x = 0.47.
KW - A-type antiferromagnetic state
KW - Manganite
KW - Simple perovskite
KW - Transmission electron microscopy
UR - http://www.scopus.com/inward/record.url?scp=84855217122&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855217122&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.409.532
DO - 10.4028/www.scientific.net/AMR.409.532
M3 - Conference contribution
AN - SCOPUS:84855217122
SN - 9783037853047
VL - 409
T3 - Advanced Materials Research
SP - 532
EP - 537
BT - Advanced Materials Research
ER -