Abstract
Destabilization of the charge-ordered (CO) state in half-doped manganites by chromium (Cr) doping in the manganese (Mn) sites was investigated. The Cr doping in the half-doped manganites makes the CO state short-ranged and induces new ferromagnetic metallic (FMM) phase at low temperature. Real space images taken in the CO state by electron microscope clearly show coexistence of the short-ranged CO and FMM states, which is characterized as a microscopicscale phase separation. Furthermore, the CO state in the Cr-doped manganites has a superlattice structure with the incommensurate wave vector q = (1/2 - ε)a*o, where ε depends on the Cr concentration. These results suggest that the Cr doping suppresses the incommensurate to commensurate structural transition found in the half-doped manganites and produces new FMM phase.
| Original language | English |
|---|---|
| Pages (from-to) | 267-271 |
| Number of pages | 5 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 70 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2001 Jan |
| Externally published | Yes |
Fingerprint
Keywords
- Charge ordering
- Impurity effect
- Perovskite manganites
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Phase separation and destabilization of the charge-ordered state in Cr-doped manganites. / Shoji, Ryuichi; Mori, Shigeo; Yamamoto, Naoki; Machida, Akihiko; Moritomo, Yutaka; Katsufuji, Takuro.
In: Journal of the Physical Society of Japan, Vol. 70, No. 1, 01.2001, p. 267-271.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Phase separation and destabilization of the charge-ordered state in Cr-doped manganites
AU - Shoji, Ryuichi
AU - Mori, Shigeo
AU - Yamamoto, Naoki
AU - Machida, Akihiko
AU - Moritomo, Yutaka
AU - Katsufuji, Takuro
PY - 2001/1
Y1 - 2001/1
N2 - Destabilization of the charge-ordered (CO) state in half-doped manganites by chromium (Cr) doping in the manganese (Mn) sites was investigated. The Cr doping in the half-doped manganites makes the CO state short-ranged and induces new ferromagnetic metallic (FMM) phase at low temperature. Real space images taken in the CO state by electron microscope clearly show coexistence of the short-ranged CO and FMM states, which is characterized as a microscopicscale phase separation. Furthermore, the CO state in the Cr-doped manganites has a superlattice structure with the incommensurate wave vector q = (1/2 - ε)a*o, where ε depends on the Cr concentration. These results suggest that the Cr doping suppresses the incommensurate to commensurate structural transition found in the half-doped manganites and produces new FMM phase.
AB - Destabilization of the charge-ordered (CO) state in half-doped manganites by chromium (Cr) doping in the manganese (Mn) sites was investigated. The Cr doping in the half-doped manganites makes the CO state short-ranged and induces new ferromagnetic metallic (FMM) phase at low temperature. Real space images taken in the CO state by electron microscope clearly show coexistence of the short-ranged CO and FMM states, which is characterized as a microscopicscale phase separation. Furthermore, the CO state in the Cr-doped manganites has a superlattice structure with the incommensurate wave vector q = (1/2 - ε)a*o, where ε depends on the Cr concentration. These results suggest that the Cr doping suppresses the incommensurate to commensurate structural transition found in the half-doped manganites and produces new FMM phase.
KW - Charge ordering
KW - Impurity effect
KW - Perovskite manganites
UR - http://www.scopus.com/inward/record.url?scp=0035583588&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035583588&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.70.267
DO - 10.1143/JPSJ.70.267
M3 - Article
AN - SCOPUS:0035583588
VL - 70
SP - 267
EP - 271
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 1
ER -