Abstract
Impurity effect on the charge and orbital ordered (CO/OO) state in doped manganites has been studied by the transmission electron microscopy (TEM), in addition to the electric and magnetic measurements. In the Cr-doped manganites (Nd0.5Ca0.5Mn1-yCryO3), the CO/OO state characterized by the incommensurate wave vector is still realized as the microdomains with the size of 10-30 nm even at lower temperature of 20 K. On the other hand, the Sc-doped manganites (Nd 0.5Ca0.5Mn1-ySCy-O3) clearly show an incommensurate to commensurate structural phase transition accompanying the formation of the long-ranged CO/OO state around 60 K. From our experimental findings, it is suggested that the substituted Cr3+ and Sc3+ ions serve as the spin impurity and hole vacancy, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 1280-1283 |
| Number of pages | 4 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 71 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2002 May |
| Externally published | Yes |
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Keywords
- Charge ordering
- Electron microscopy
- Impurity effect
- Perovskite manganites
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Charge Ordered State in the Impurity-Doped Manganites. / Mori, S.; Shoji, R.; Yamamoto, N.; Machida, A.; Moritomo, Y.; Katsufuji, Takuro.
In: Journal of the Physical Society of Japan, Vol. 71, No. 5, 05.2002, p. 1280-1283.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Charge Ordered State in the Impurity-Doped Manganites
AU - Mori, S.
AU - Shoji, R.
AU - Yamamoto, N.
AU - Machida, A.
AU - Moritomo, Y.
AU - Katsufuji, Takuro
PY - 2002/5
Y1 - 2002/5
N2 - Impurity effect on the charge and orbital ordered (CO/OO) state in doped manganites has been studied by the transmission electron microscopy (TEM), in addition to the electric and magnetic measurements. In the Cr-doped manganites (Nd0.5Ca0.5Mn1-yCryO3), the CO/OO state characterized by the incommensurate wave vector is still realized as the microdomains with the size of 10-30 nm even at lower temperature of 20 K. On the other hand, the Sc-doped manganites (Nd 0.5Ca0.5Mn1-ySCy-O3) clearly show an incommensurate to commensurate structural phase transition accompanying the formation of the long-ranged CO/OO state around 60 K. From our experimental findings, it is suggested that the substituted Cr3+ and Sc3+ ions serve as the spin impurity and hole vacancy, respectively.
AB - Impurity effect on the charge and orbital ordered (CO/OO) state in doped manganites has been studied by the transmission electron microscopy (TEM), in addition to the electric and magnetic measurements. In the Cr-doped manganites (Nd0.5Ca0.5Mn1-yCryO3), the CO/OO state characterized by the incommensurate wave vector is still realized as the microdomains with the size of 10-30 nm even at lower temperature of 20 K. On the other hand, the Sc-doped manganites (Nd 0.5Ca0.5Mn1-ySCy-O3) clearly show an incommensurate to commensurate structural phase transition accompanying the formation of the long-ranged CO/OO state around 60 K. From our experimental findings, it is suggested that the substituted Cr3+ and Sc3+ ions serve as the spin impurity and hole vacancy, respectively.
KW - Charge ordering
KW - Electron microscopy
KW - Impurity effect
KW - Perovskite manganites
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U2 - 10.1143/JPSJ.71.1280
DO - 10.1143/JPSJ.71.1280
M3 - Article
VL - 71
SP - 1280
EP - 1283
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 5
ER -