Conductivity and Dielectric Properties of Nearly Monodisperse NiFe 2 O 4 Nanoparticles

Kurtan, U.; ERDEMİ, Hamit; Dursun, D.; Baykal, A.

doi:10.1007/s10948-016-3490-6

Conductivity and Dielectric Properties of Nearly Monodisperse NiFe 2 O 4 Nanoparticles

Yazarlar (4)

U. Kurtan
Fatih Üniversitesi, Türkiye

Prof. Dr. Hamit ERDEMİ Yalova Üniversitesi, Türkiye

D. Dursun
Fatih Üniversitesi, Türkiye

A. Baykal
Fatih Üniversitesi, Türkiye

Makale Türü	Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı	Journal of Superconductivity and Novel Magnetism (Q3)
Dergi ISSN	1557-1939 Dergi Bilgileri (2016)
Dergi Tarandığı Indeksler	SCI-Expanded
Makale Dili	İngilizce	Basım Tarihi	07-2016
Kabul Tarihi	–	Yayınlanma Tarihi	30-03-2016
Cilt / Sayı / Sayfa	29 / 7 / 1923–1930	DOI	10.1007/s10948-016-3490-6
Makale Linki	http://link.springer.com/10.1007/s10948-016-3490-6
UAK Araştırma Alanları	Polimer Bilimi

Özet

Oleylamine (OAm) functionalized NiFe2O4 nanoparticles were synthesized by reflux method. Oleylamine as a multufunctional ligand provides the essential basic condition for the formation of NiFe2O4 nanoparticles, and it has also surfactant and reducing agent roles. The product was characterized by X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry, and thermal gravimetric analyzer (TG). The detailed electrical conductivity and dielectric property of measurements have been performed by dielectric impedance analyzer. The conductivity results show that ac conductivity (σac) is temperature dependent particularly at low frequencies whereas dc conductivity (σdc) exhibits only temperature dependency. The highest dc conductivity is 4.37 × 10 ⁻¹² S.cm ⁻¹ at 120 ^∘C. The dielectric constant (ε^′), dielectric loss (ε^″), and dielectric loss tangent (tan δ) show different behaviors with frequency and temperature. The variation of dielectric properties with temperature is mainly due to temperature-assisted electron exchange between Ni ²⁺ and Fe ³⁺ ions.

Anahtar Kelimeler

Dielectric spectroscopy | Electrical properties | NiFe2O4 | Oleylamine | Reflux method

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Atıf Sayıları
Yöksis	1
Scopus	9

Conductivity and Dielectric Properties of Nearly Monodisperse NiFe 2 O 4 Nanoparticles

Dergi Adı	Journal of Superconductivity and Novel Magnetism
Kısa Adı	J SUPERCOND NOV MAGN
Yayıncı	SPRINGER
Açık Erişim	Hayır
ISSN	1557-1939
E-ISSN	1557-1947
Wos Quartile	Q3
Scopus Quartile	Q3
Tarandığı Indeksler	SCIE , Scopus
WoS Kategoriler	PHYSICS, APPLIED \| PHYSICS, CONDENSED MATTER
Scopus Kategoriler	CONDENSED MATTER PHYSICS \| ELECTRONIC, OPTICAL AND MAGNETIC MATERIALS