TY  - JOUR
AU  - Lei, Hechang
AU  - Ryu, Hyejin
AU  - Ivanovski, Valentin N.
AU  - Warren, J. B.
AU  - Frenkel, A. I.
AU  - Cekić, Božidar Đ.
AU  - Yin, Wei-Guo
AU  - Petrović, Čedomir
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5176
AB  - We have successfully synthesized a layered iron oxychalcogenide BaFe2Se2O single crystal. This compound is built up of Ba and Fe-Se(O) layers alternatively stacked along the c axis. The Fe-Se(O) layers contain double chains of edge-shared Fe-Se(O) tetrahedra that propagate along the b axis and are bridged by oxygen along the a axis. Physical property measurements indicate that BaFe2Se2O is a semiconductor without the Curie-Weiss behavior up to 350 K. There is a possible long-range antiferromagnetic transition at 240 K, corresponding to the peak in specific-heat measurement, and two transitions at 115 K and 43 K where magnetic susceptibility drops abruptly. The magnetic entropy up to 300 K is much smaller than the expected value for Fe2+ in tetrahedral crystal fields and the Mossbauer spectrum indicates that long-range magnetic order is unlikely at 294 K. Our results suggest that BaFe2Se2O is a magnetic insulator at the borderline between a long-range antiferromagnetic spin ordering and possible spin dimerization.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Structure and physical properties of the layered iron oxychalcogenide BaFe2Se2O
VL  - 86
IS  - 19
DO  - 10.1103/PhysRevB.86.195133
ER  - 

@article{
author = "Lei, Hechang and Ryu, Hyejin and Ivanovski, Valentin N. and Warren, J. B. and Frenkel, A. I. and Cekić, Božidar Đ. and Yin, Wei-Guo and Petrović, Čedomir",
year = "2012",
abstract = "We have successfully synthesized a layered iron oxychalcogenide BaFe2Se2O single crystal. This compound is built up of Ba and Fe-Se(O) layers alternatively stacked along the c axis. The Fe-Se(O) layers contain double chains of edge-shared Fe-Se(O) tetrahedra that propagate along the b axis and are bridged by oxygen along the a axis. Physical property measurements indicate that BaFe2Se2O is a semiconductor without the Curie-Weiss behavior up to 350 K. There is a possible long-range antiferromagnetic transition at 240 K, corresponding to the peak in specific-heat measurement, and two transitions at 115 K and 43 K where magnetic susceptibility drops abruptly. The magnetic entropy up to 300 K is much smaller than the expected value for Fe2+ in tetrahedral crystal fields and the Mossbauer spectrum indicates that long-range magnetic order is unlikely at 294 K. Our results suggest that BaFe2Se2O is a magnetic insulator at the borderline between a long-range antiferromagnetic spin ordering and possible spin dimerization.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Structure and physical properties of the layered iron oxychalcogenide BaFe2Se2O",
volume = "86",
number = "19",
doi = "10.1103/PhysRevB.86.195133"
}

Lei, H., Ryu, H., Ivanovski, V. N., Warren, J. B., Frenkel, A. I., Cekić, B. Đ., Yin, W.,& Petrović, Č.. (2012). Structure and physical properties of the layered iron oxychalcogenide BaFe2Se2O. in Physical Review B: Condensed Matter and Materials Physics, 86(19).
https://doi.org/10.1103/PhysRevB.86.195133

Lei H, Ryu H, Ivanovski VN, Warren JB, Frenkel AI, Cekić BĐ, Yin W, Petrović Č. Structure and physical properties of the layered iron oxychalcogenide BaFe2Se2O. in Physical Review B: Condensed Matter and Materials Physics. 2012;86(19).
doi:10.1103/PhysRevB.86.195133 .

Lei, Hechang, Ryu, Hyejin, Ivanovski, Valentin N., Warren, J. B., Frenkel, A. I., Cekić, Božidar Đ., Yin, Wei-Guo, Petrović, Čedomir, "Structure and physical properties of the layered iron oxychalcogenide BaFe2Se2O" in Physical Review B: Condensed Matter and Materials Physics, 86, no. 19 (2012),
https://doi.org/10.1103/PhysRevB.86.195133 . .