journal article·2007-09Open access

Structural and magnetic properties of ZnO:TM (TM: Co, Mn) nanopowders

D. Rubi, A. Calleja, J. Arbiol, X.G. Capdevila, M. Segarra, Ll. Aragonès, J. Fontcuberta

Abstract

We report on the structural and magnetic characterization of Co0.1Zn0.9O and Mn0.1Zn0.9O nanopowders obtained by a soft chemistry route. We show that those samples fired at low temperatures display a ferromagnetic interaction that can not be attributed to the presence of impurities. A magnetic aging mechanism is observed, reflecting the key role played by defects in the stabilization of ferromagnetism in this kind of diluted magnetic semiconductors.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: ZnO doping and properties · Magnetic and transport properties of perovskites and related materials · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (10)

Show source-provided references
1. Dietl · Science · 2000 · 287 · 101910.1126/science.287.5455.1019 ↗
2. Sato · Jpn. J. Appl. Phys. · 2000 · 40 · L33410.1143/JJAP.40.L334 ↗
3. Venkatesan · Phys. Rev. Lett. · 2004 · 93 · 17720610.1103/PhysRevLett.93.177206 ↗
4. Lawes · Phys. Rev. B · 2005 · 71 · 04520110.1103/PhysRevB.71.045201 ↗
5. Ueda · Appl. Phys. Lett. · 2001 · 79 · 98810.1063/1.1384478 ↗
6. Kundaliya · Nat. Mater. · 2004 · 3 · 70910.1038/nmat1221 ↗
7. Kittilstved · Phys. Rev. Lett. · 2005 · 94 · 14720910.1103/PhysRevLett.94.147209 ↗
8. Calleja · Phys. C · 2002 · 372 · 111510.1016/S0921-4534(02)00860-2 ↗
9. García · Phys. Rev. Lett. · 2005 · 94 · 21720610.1103/PhysRevLett.94.217206 ↗
10. D. Rubi, et al., Phys. Rev. B, 2007, in press.