3 RESULTADOS E DISCUSSÕES
6. As nanopartículas preparadas nesse trabalho, bem como as estruturas core/shell
propostas podem ser testadas, por exemplo, para aplicações biomédicas (como hipertermia magnética). Mas, será preciso adequar o tamanho desses componentes em torno de 10 nm ou menos, fazendo as caracterizações adequadas e verificando a viabilidade para as aplicações.
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APÊNDICE A – Gráficos R, X e ∣Z∣ para as amostras LSM25-LSM210
Figura A1– Resistência em função da frequência para amostras LSM25- LSM210.
Tabela A1 – Valores de D, fp e Rp para resistência das amostras LSM25- LSM210.
Parâmetros LSM25 LSM27 LSM28 LSM29 LSM210 Bobina D (nm) 30 41 57 65 98 fp (MHz) 177,04 175,54 176,54 174,04 163,54 190,54 Rp=(Ohms) 4,10 3,52 3,65 3.64 1,60 7,10 100 120 140 160 180 200 220 240 -1 0 1 2 3 4 5 6 7 8 160 180 1 2 3 4 Bobina LSM25 LSM27 LSM28 LSM29 LSM210 R ( ) f (MHz) f (MHz) Rp
Figura A2 – Reatância em função da frequência para amostras LSM25- LSM210.
Tabela A2 – Valores de D, fp e Xp para reatância das amostras LSM25- LSM210.
Parâmetros LSM25 LSM27 LSM28 LSM29 LSM210 Bobina D (nm) 30 41 57 65 98 fp (MHz) 174,02 174,04 172,54 171,04 159,05 190,54 Xp=(Ohms) 1,86 1,81 1,79 1,72 0,81 4,87 100 120 140 160 180 200 220 240 -4 -2 0 2 4 160 180 2 Xp Bobina LSM25 LSM27 LSM28 LSM29 LSM210 X ( ) f (MHz) f (mhz) Xp
Figura A3 – Impedância em função da frequência para amostras LSM25 - LSM210.
Tabela A3 – Valores de D, fp e ∣Z∣p para impedância das amostras LSM25 - LSM210.
Parâmetros LSM25 LSM27 LSM28 LSM29 LSM210 Bobina D (nm) 30 41 57 65 98 fp (MHz) 177,04 176,03 175,01 174,04 165,05 190,54 Zp=(Ohms) 3,97 3,64 3,58 3,72 1,64 8,9 100 120 140 160 180 200 220 240 0 1 2 3 4 5 6 7 8 9 150 155 160 165 170 175 180 2 3 4 f (MHz) Bobina LSM25 LSM27 LSM28 LSM29 LSM210 ô Z ô ( ) f (MHz) ZR
APÊNDICE B – Influência do fator de empacotamento sobre os parâmetros Rp, Xp e ∣Z∣p.
Figura B1 - Comportamento dos parâmetros Rp, Xp e ∣Z∣p com o aumento do tamanho dos cristalitos D no