Room-Temperature Ferromagnetic Ultrathin α-MoO3:Te Nanoflakes
Source abstract
Abstract
We materialized room-temperature ferromagnetism in ultrathin α-MoO3:Te nanoflakes. The α-MoO3:Te nanoflakes, which had been grown by vapor-phase epitaxy, clearly exhibited an Ag Raman band from symmetric stretching of υ(Mo–O3–Mo) in the 2D-like ultrathin α-MoO3:Te layer. Due to the intentional incorporation of smaller Te ions into bigger Mo sites, the pentacoordinated Mo5+ bonds were created inside the orthorhombic α-MoO3:Te lattice system. Since Mo5+ ions have magnetic moments from unpaired electron spins, a large number of overlapped bound magnetic polarons could be formed via ferromagnetic coupling with charged oxygen vacancies that are inevitably generated at pentacoordinated [Mo5+O5] centers. This gives rise to the increase in long-range ferromagnetic ordering and leads to room-temperature ferromagnetism in the entire α-MoO3:Te solid-state system. The results may move a step closer to the demonstration of spin functionalities in the wide bandgap semiconductor α-MoO3:Te.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: ZnO doping and properties · Transition Metal Oxide Nanomaterials · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Quantum-functional Semiconductor Research Center, Dongguk University−Seoul 04623, Korea
Department of Physics, Dongguk University−Seoul 04623, Korea
Department of Semiconductor Science, Dongguk University−Seoul 04623, Korea
Funding
National Research Foundation of Korea
References (47)
Show source-provided references
1. 10.1126/science.122052710.1126/science.1220527 ↗
2. 10.1038/nature0940510.1038/nature09405 ↗
3. 10.1021/nl304541s10.1021/nl304541s ↗
4. 10.1016/S1369-7021(10)70033-X10.1016/S1369-7021(10)70033-X ↗
5. 10.1021/nn202756610.1021/nn2027566 ↗
6. 10.1063/1.361981610.1063/1.3619816 ↗
7. 10.1021/nn302193q10.1021/nn302193q ↗
8. 10.1016/j.carbon.2017.10.08910.1016/j.carbon.2017.10.089 ↗
9. 10.1016/j.carbon.2017.10.00510.1016/j.carbon.2017.10.005 ↗
10. 10.1002/adma.20120190910.1002/adma.201201909 ↗
11. 10.1038/s41928-018-0118-910.1038/s41928-018-0118-9 ↗
12. 10.1021/nn404961e10.1021/nn404961e ↗
13. 10.1021/nl402734610.1021/nl4027346 ↗
14. 10.1103/PhysRevB.95.08140410.1103/PhysRevB.95.081404 ↗
15. 10.1039/C8NH00273H10.1039/C8NH00273H ↗
16. 10.1002/asia.20130047010.1002/asia.201300470 ↗
17. 10.1021/acsami.6b1374310.1021/acsami.6b13743 ↗
18. 10.1002/adfm.20120061510.1002/adfm.201200615 ↗
19. 10.1038/nmat481010.1038/nmat4810 ↗
20. 10.1016/j.jmst.2014.08.01310.1016/j.jmst.2014.08.013 ↗
21. 10.1039/C1CE05700F10.1039/C1CE05700F ↗
22. 10.1016/j.sna.2016.11.03210.1016/j.sna.2016.11.032 ↗
23. 10.1016/j.jallcom.2018.01.23110.1016/j.jallcom.2018.01.231 ↗
24. 10.1002/mrc.134510.1002/mrc.1345 ↗
25. 10.1039/C4DT02861A10.1039/C4DT02861A ↗
26. 10.1021/cm902976910.1021/cm9029769 ↗
27. 10.1016/j.molcata.2009.04.00710.1016/j.molcata.2009.04.007 ↗
28. 10.1016/j.ijhydene.2013.05.10610.1016/j.ijhydene.2013.05.106 ↗
29. 10.1063/1.305604910.1063/1.3056049 ↗
30. 10.1016/j.matdes.2018.04.00710.1016/j.matdes.2018.04.007 ↗
31. 10.1021/jp907602w10.1021/jp907602w ↗
32. 10.1021/jp202123a10.1021/jp202123a ↗
33. 10.1002/adma.20120442510.1002/adma.201204425 ↗
34. 10.1038/s41598-018-26751-410.1038/s41598-018-26751-4 ↗
35. 10.1038/srep1001310.1038/srep10013 ↗
36. 10.1021/jp207879b10.1021/jp207879b ↗
37. 10.1016/j.jlumin.2017.05.07210.1016/j.jlumin.2017.05.072 ↗
38. 10.1021/ic702192k10.1021/ic702192k ↗
39. 10.1016/j.solidstatesciences.2006.05.00210.1016/j.solidstatesciences.2006.05.002 ↗
40. 10.1016/j.jallcom.2014.01.23810.1016/j.jallcom.2014.01.238 ↗
41. 10.1039/a906194k10.1039/a906194k ↗
42. 10.1039/b107012f10.1039/b107012f ↗
43. 10.1063/1.169011110.1063/1.1690111 ↗
44. 10.1063/1.153745710.1063/1.1537457 ↗
45. 10.1063/1.222190110.1063/1.2221901 ↗
46. 10.1063/1.350789410.1063/1.3507894 ↗
47. 10.1038/nmat131010.1038/nmat1310 ↗