Abstract
Neutron scattering experiments were performed on single crystals of magnetic impurity doped cobalt oxides La 1.5Ca 0.5CoO 4 to characterize the charge and spin orders. We newly found contrasting impurity effects. Two types of magnetic peaks are observed at q=(0.5,0,L) with L=half-integer and integer in La 1.5Ca 0.5CoO 4, while magnetic peak at L=half-integer (integer) was only observed in Mn (Fe)-substituted sample. Although Mn and Fe impurities degrade charge and magnetic order, Cr impurity stabilizes the ordering at x=0.5. Based on the crystal structural analysis of Cr doped sample, we found that the excess oxygen and change of octahedron around Co 3+ were realized in Cr doped sample.
| Original language | English |
|---|---|
| Article number | 012061 |
| Journal | Journal of Physics: Conference Series |
| Volume | 340 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Magnetic impurity effect on charge and magnetic order in doped La 1.5Ca 0.5CoO 4 . / Horigane, Kazumasa; Hiraka, H.; Tomiyasu, K.; Ohoyama, K.; Louca, D.; Yamada, K.
In: Journal of Physics: Conference Series, Vol. 340, 012061, 2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic impurity effect on charge and magnetic order in doped La 1.5Ca 0.5CoO 4
AU - Horigane, Kazumasa
AU - Hiraka, H.
AU - Tomiyasu, K.
AU - Ohoyama, K.
AU - Louca, D.
AU - Yamada, K.
PY - 2012
Y1 - 2012
N2 - Neutron scattering experiments were performed on single crystals of magnetic impurity doped cobalt oxides La 1.5Ca 0.5CoO 4 to characterize the charge and spin orders. We newly found contrasting impurity effects. Two types of magnetic peaks are observed at q=(0.5,0,L) with L=half-integer and integer in La 1.5Ca 0.5CoO 4, while magnetic peak at L=half-integer (integer) was only observed in Mn (Fe)-substituted sample. Although Mn and Fe impurities degrade charge and magnetic order, Cr impurity stabilizes the ordering at x=0.5. Based on the crystal structural analysis of Cr doped sample, we found that the excess oxygen and change of octahedron around Co 3+ were realized in Cr doped sample.
AB - Neutron scattering experiments were performed on single crystals of magnetic impurity doped cobalt oxides La 1.5Ca 0.5CoO 4 to characterize the charge and spin orders. We newly found contrasting impurity effects. Two types of magnetic peaks are observed at q=(0.5,0,L) with L=half-integer and integer in La 1.5Ca 0.5CoO 4, while magnetic peak at L=half-integer (integer) was only observed in Mn (Fe)-substituted sample. Although Mn and Fe impurities degrade charge and magnetic order, Cr impurity stabilizes the ordering at x=0.5. Based on the crystal structural analysis of Cr doped sample, we found that the excess oxygen and change of octahedron around Co 3+ were realized in Cr doped sample.
UR - http://www.scopus.com/inward/record.url?scp=84858611018&partnerID=8YFLogxK
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U2 - 10.1088/1742-6596/340/1/012061
DO - 10.1088/1742-6596/340/1/012061
M3 - Article
AN - SCOPUS:84858611018
VL - 340
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
M1 - 012061
ER -