Structure and physical properties of the layered iron oxychalcogenide BaFe2Se2O
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Аутори
Lei, HechangRyu, Hyejin
Ivanovski, Valentin N.
Warren, J. B.
Frenkel, A. I.
Cekić, Božidar Đ.
Yin, Wei-Guo
Petrović, Čedomir
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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.
Извор:
Physical Review B: Condensed Matter and Materials Physics, 2012, 86, 19Финансирање / пројекти:
- Истраживање интерметалика и полупроводника и могућа примена у обновљивим изворима енергије (RS-MESTD-Basic Research (BR or ON)-171001)
- US DOE [DE-AC02-98CH10886], US Department of Energy [DE-FG02-03ER15476, DE-FG02-05ER15688]
DOI: 10.1103/PhysRevB.86.195133
ISSN: 1098-0121
WoS: 000311544500001
Scopus: 2-s2.0-84870422009
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VinčaTY - 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 . .