Abstract
We report phase segregation based on cerium content in thick (> 70 [mu]m) single crystals and a polycrystalline sample of Nd[sub 2-x]Ce[sub x]CuO[sub 4-y] with nominal composition x = 0.15. The crystals showed segregation into sharply defined sheets of material with different cerium concentrations. These sheets in the a-b-plane of the crystals were apparent when polished cross-sections were viewed with crossed polarizers in visible light. The different color of each layer was correlated with cerium compositions by electron microprobe analysis. AC susceptibility showed a strong, well defined transition at 24.5 K and a second, weaker transition at 20 K. The appearance of the 20 K transition was shown to be associated with a layer of material with reduced cerium content. A polycrystalline sample also displayed small intra-grain regions with reduced cerium content. (orig.).
Drews, A R;
Osofsky, M S;
Hoff, H A;
[1]
Peng, J L;
Li, Z Y;
Greene, R L;
[2]
Vanderah, T A
[3]
- Material Physics Branch, Naval Research Lab., Washington, DC (United States)
- Center for Superconductivity Research, Univ. of Maryland, College Park (United States)
- Chemistry Div., NAWCWPNS, China Lake, CA (United States)
Citation Formats
Drews, A R, Osofsky, M S, Hoff, H A, Peng, J L, Li, Z Y, Greene, R L, and Vanderah, T A.
Phase segregation of cerium in Nd[sub 2-x]Ce[sub x]CuO[sub 4-y]. [NdCeCuO].
Netherlands: N. p.,
1992.
Web.
doi:10.1016/0921-4534(92)90328-A.
Drews, A R, Osofsky, M S, Hoff, H A, Peng, J L, Li, Z Y, Greene, R L, & Vanderah, T A.
Phase segregation of cerium in Nd[sub 2-x]Ce[sub x]CuO[sub 4-y]. [NdCeCuO].
Netherlands.
https://doi.org/10.1016/0921-4534(92)90328-A
Drews, A R, Osofsky, M S, Hoff, H A, Peng, J L, Li, Z Y, Greene, R L, and Vanderah, T A.
1992.
"Phase segregation of cerium in Nd[sub 2-x]Ce[sub x]CuO[sub 4-y]. [NdCeCuO]."
Netherlands.
https://doi.org/10.1016/0921-4534(92)90328-A.
@misc{etde_6858642,
title = {Phase segregation of cerium in Nd[sub 2-x]Ce[sub x]CuO[sub 4-y]. [NdCeCuO]}
author = {Drews, A R, Osofsky, M S, Hoff, H A, Peng, J L, Li, Z Y, Greene, R L, and Vanderah, T A}
abstractNote = {We report phase segregation based on cerium content in thick (> 70 [mu]m) single crystals and a polycrystalline sample of Nd[sub 2-x]Ce[sub x]CuO[sub 4-y] with nominal composition x = 0.15. The crystals showed segregation into sharply defined sheets of material with different cerium concentrations. These sheets in the a-b-plane of the crystals were apparent when polished cross-sections were viewed with crossed polarizers in visible light. The different color of each layer was correlated with cerium compositions by electron microprobe analysis. AC susceptibility showed a strong, well defined transition at 24.5 K and a second, weaker transition at 20 K. The appearance of the 20 K transition was shown to be associated with a layer of material with reduced cerium content. A polycrystalline sample also displayed small intra-grain regions with reduced cerium content. (orig.).}
doi = {10.1016/0921-4534(92)90328-A}
journal = []
volume = {200:1/2}
journal type = {AC}
place = {Netherlands}
year = {1992}
month = {Sep}
}
title = {Phase segregation of cerium in Nd[sub 2-x]Ce[sub x]CuO[sub 4-y]. [NdCeCuO]}
author = {Drews, A R, Osofsky, M S, Hoff, H A, Peng, J L, Li, Z Y, Greene, R L, and Vanderah, T A}
abstractNote = {We report phase segregation based on cerium content in thick (> 70 [mu]m) single crystals and a polycrystalline sample of Nd[sub 2-x]Ce[sub x]CuO[sub 4-y] with nominal composition x = 0.15. The crystals showed segregation into sharply defined sheets of material with different cerium concentrations. These sheets in the a-b-plane of the crystals were apparent when polished cross-sections were viewed with crossed polarizers in visible light. The different color of each layer was correlated with cerium compositions by electron microprobe analysis. AC susceptibility showed a strong, well defined transition at 24.5 K and a second, weaker transition at 20 K. The appearance of the 20 K transition was shown to be associated with a layer of material with reduced cerium content. A polycrystalline sample also displayed small intra-grain regions with reduced cerium content. (orig.).}
doi = {10.1016/0921-4534(92)90328-A}
journal = []
volume = {200:1/2}
journal type = {AC}
place = {Netherlands}
year = {1992}
month = {Sep}
}