Above room-temperature ferromagnetism in GaN powders by calcinations with CuO

QC 20141204
Gallium nitride powders were calcined with copper oxide in either air or N2 and analyzed by means of powder X-ray diffraction (XRD), high-resolution parallel illumination (HRTEM) and scanning probe transmission electron microscopy (STEM), energy dispersive X-ray spectroscopy (EDXS), and electron energy loss spectroscopy (EELS) in order to address the structural and electronic effects of Cu-incorporation into GaN. Gallium oxide and multiple copper oxide phases corresponding to the calcination environment were detected. Significant changes in the lattice parameters and electronic structure of the N2-processed GaN indicate incorporation of both copper and oxygen into the GaN lattice as well as changes in the chemical bonding due to the calcinations process. SQUID magnetometer measurements at 300 K demonstrated ferromagnetism in selected samples.

Seipel, B. (författare)
Erni, R.KTH,Materialvetenskap,Portland State University, United States(Swepub:kth)- (författare)
Gupta, A. (författare)
Li, C. (författare)
Moeck, P. (författare)
Rao, VenkatKTH,Teknisk materialfysik(Swepub:kth)u1i9ssac (författare)
Browning, N. (författare)
KTHMaterialvetenskap (creator_code:org_t)

Ingår i:Mater Res Soc Symp Proc: Springer Science and Business Media LLC, s. 62-6715589989859781558998988
Ingår i:MRS Proceedings: Springer Science and Business Media LLC, s. 62-671946-4274

Av författaren/redakt...: Noice, L.; Seipel, B.; Erni, R.; Gupta, A.; Li, C.; Moeck, P.; visa fler...; Rao, Venkat; Browning, N.; visa färre...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.