Bartolome JF, De Aza AH, Martin A, Pastor JY, Llorca J, Torrecillas R, Bruno G: Alumina/zirconia micro/nanocomposites: a new material for biomedical applications with superior sliding wear resistance. J Am Ceram Soc 2007, 90:3177–3184. 10.1111/j.1551-2916.2007.01884.xCrossRef 47. Pérez-Cabero M, Taboada J, selleck products Guerrero-Ruiz A, Overweg A, Rodríguez-Ramos I: The role of alpha-iron and cementite phases in the growing mechanism of carbon nanotubes: a 57 Fe Mössbauer spectroscopy study. selleckchem Phys Chem Chem Phys 2006, 8:1230–1235. 10.1039/b516243bCrossRef 48. He N, Kuang Y, Dai Q, Miao Y, Zhang A, Wang X, Song K, Lu Z, Yuan C: Growth of carbon nanotubules on Fe-loading

zeolites and investigation of catalytic active center. Mater Sci Eng C 1999, 8:151–157.CrossRef 49. Diamond S: Particle morphologies in fly ash. Cem Concr Res 1986, 16:569–579. 10.1016/0008-8846(86)90095-5CrossRef Competing https://www.selleckchem.com/products/CP-690550.html interests

The authors declare that they have no competing interests. Authors’ contributions NH carried out the experimental work, synthesis, characterization and analysis and wrote the paper. AS participated in the experimental design, carried out the initial baseline work on the study and assisted in constructing the paper. DN and HM ran the Mössbauer, interpreted the results and wrote the section. DB assisted with the analysis of XRD. PF and SD participated in the design and coordination of the study and interpretation of the results. All authors read and approved the final manuscript.”
“Background Spin torque microwave nano-oscillators (STNO) are intensively studied nowadays. STNO is a nanosize device consisting of several layers of ferromagnetic materials separated by nonmagnetic layers. A dc current passes through one ferromagnetic layer (reference layer) and thus being polarized. Then, it enters to an active magnetic layer (so-called free layer) and interacts with the magnetization causing its high-frequency

oscillations due to the spin angular Glutamate dehydrogenase momentum transfer. These oscillation frequencies can be tuned by changing the applied dc current and external magnetic field [1–3] that makes STNO being promising candidates for spin transfer magnetic random access memory and frequency-tunable nanoscale microwave generators with extremely narrow linewidth [4]. The magnetization in the free layer can form a vortex configuration that possesses a periodical circular motion driven by spin transfer torque [1, 5–11]. For practical applications of such nanoscale devices, some challenges have to be overcome, e.g., enhancing the STNO output power. So, from a fundamental point of view as well as for practical applications, the physics of STNO magnetization dynamics has to be well understood. In the present paper, we focus on the magnetic vortex dynamics in a thin circular nanodot representing a free layer of nanopillar (see inset of Figure 1).