KAJIAN SIFAT DIELEKTRIK PADA NANOPARTIKEL COBALT FERRITE (CoFe2O4) YANG DIENKAPSULASI DENGAN POLYETHYLENE GLYCOL (PEG-4000)
| Main Authors: | , AJO DIAN YUSANDIKA, , Dr. Edi Suharyadi, M.Eng. |
|---|---|
| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
|
| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/134440/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=77009 |
| ctrlnum |
134440 |
|---|---|
| fullrecord |
<?xml version="1.0"?>
<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><relation>https://repository.ugm.ac.id/134440/</relation><title>KAJIAN SIFAT DIELEKTRIK PADA NANOPARTIKEL COBALT FERRITE (CoFe2O4) YANG DIENKAPSULASI DENGAN POLYETHYLENE GLYCOL (PEG-4000)</title><creator>, AJO DIAN YUSANDIKA</creator><creator>, Dr. Edi Suharyadi, M.Eng.</creator><subject>ETD</subject><description>Nanoparticles Cobalt Ferrite (CoFe2O4) has been synthesized with various
concentrations of PEG-4000 at 0, 25, 50, and 75%. The measurement uses
computerized system impedance spectroscopy in the frequency region of 10 kHz to
120 kHz to investigate its dielectric behaviour caused by frequence changes and
changes of concentrations PEG-4000. The result shows that the dielectric constant
and loss tangent decreased with increasing frequency but the impedance increased
with increasing frequency. Overall, the addition of PEG-4000 can raise the value
of the real dielectric constant and can raise the value of the impedance, but it
reduce of the loss tangent value. The pattern of relationships between loss tangent
against frequency electric field on all sample occurred a certain maximum value
at the frequency range 10 kHz - 20 kHz and the patterns of relationships between
impedance against frequency electric field occurred a certain minimum value at
frequency range 10 kHz - 20 kHz. In general the presence of encapsulation of
PEG-4000 raises value of the real dielectric constant, raise value of the
impedance, and lower value of loss tangent. This is due to encapsulation of PEG-
4000 enlarge of grain size CoFe2O4 so as to raise value of the real dielectric
constant and raise value of impedance but lower the loss tangent value.
Keywords: CoFe2O4 nanoparticles, the encapsulation of PEG, the dielectric
constant</description><publisher>[Yogyakarta] : Universitas Gadjah Mada</publisher><date>2014</date><type>Thesis:Thesis</type><type>PeerReview:NonPeerReviewed</type><identifier> , AJO DIAN YUSANDIKA and , Dr. Edi Suharyadi, M.Eng. (2014) KAJIAN SIFAT DIELEKTRIK PADA NANOPARTIKEL COBALT FERRITE (CoFe2O4) YANG DIENKAPSULASI DENGAN POLYETHYLENE GLYCOL (PEG-4000). UNSPECIFIED thesis, UNSPECIFIED. </identifier><relation>http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=77009</relation><recordID>134440</recordID></dc>
|
| format |
Thesis:Thesis Thesis PeerReview:NonPeerReviewed PeerReview |
| author |
, AJO DIAN YUSANDIKA , Dr. Edi Suharyadi, M.Eng. |
| title |
KAJIAN SIFAT DIELEKTRIK PADA NANOPARTIKEL COBALT FERRITE (CoFe2O4) YANG DIENKAPSULASI DENGAN POLYETHYLENE GLYCOL (PEG-4000) |
| publisher |
[Yogyakarta] : Universitas Gadjah Mada |
| publishDate |
2014 |
| topic |
ETD |
| url |
https://repository.ugm.ac.id/134440/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=77009 |
| contents |
Nanoparticles Cobalt Ferrite (CoFe2O4) has been synthesized with various
concentrations of PEG-4000 at 0, 25, 50, and 75%. The measurement uses
computerized system impedance spectroscopy in the frequency region of 10 kHz to
120 kHz to investigate its dielectric behaviour caused by frequence changes and
changes of concentrations PEG-4000. The result shows that the dielectric constant
and loss tangent decreased with increasing frequency but the impedance increased
with increasing frequency. Overall, the addition of PEG-4000 can raise the value
of the real dielectric constant and can raise the value of the impedance, but it
reduce of the loss tangent value. The pattern of relationships between loss tangent
against frequency electric field on all sample occurred a certain maximum value
at the frequency range 10 kHz - 20 kHz and the patterns of relationships between
impedance against frequency electric field occurred a certain minimum value at
frequency range 10 kHz - 20 kHz. In general the presence of encapsulation of
PEG-4000 raises value of the real dielectric constant, raise value of the
impedance, and lower value of loss tangent. This is due to encapsulation of PEG-
4000 enlarge of grain size CoFe2O4 so as to raise value of the real dielectric
constant and raise value of impedance but lower the loss tangent value.
Keywords: CoFe2O4 nanoparticles, the encapsulation of PEG, the dielectric
constant |
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IOS2744.134440 |
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Universitas Gadjah Mada |
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Perpustakaan Pusat Universitas Gadjah Mada |
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488 |
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UGM Repository |
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Karya Umum |
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SLEMAN |
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DAERAH ISTIMEWA YOGYAKARTA |
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| first_indexed |
2016-09-14T18:35:03Z |
| last_indexed |
2016-09-22T21:49:11Z |
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dc |
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1765816676661592064 |
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17.538404 |