Partículas nanométricas de ferritas de ítrio
| Autor: | Godoi Ricardo H. M., Jafelicci Jr. Miguel, Marques Rodrigo F. C., Varanda Laudemir C., Lima Roberto C. |
|---|---|
| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 22, Iss 6, Pp 783-786 (1999) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| Popis: | Nanoparticles of yttrium iron garnet (YIG) were obtained by coprecipitation. The particles were prepared by hydrolysis in acid medium with addition of ammonia or urea, for homogeneous nucleation, at 90ºC. Different compositions and spherical morphologies were achieved by changing reactants concentrations and precipitation agent. X-ray diffractometry, transmission electron microscopy, differential thermal analysis and electrophoretic mobility were carried out on these particles to investigate the obtained phase, phase transition temperature, morphology, particle size and zeta potential, respectively. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|