Investigations of Structural and Magnetic Properties of Nanostructured Ni_0.5+xZn_0.5‐xFe₂O₄ Magnetic Feeders for CSEM Application

Abstract

Marine CSEM is a new technique for detection of deep target hydrocarbons. Aluminum EM antenna was developed, and nanostructured NiZn magnetic feeders were used to increase the field strength from EM antenna for deep hydrocarbons. The doping of Ni2+ was aimed at the optimization of initial permeability and magnetic losses. Ni0.5+xZn0.5‐xFe2O4 (x = 0.3) samples sintered at 950°C presented highest initial permeability (106.23) and low magnetic loss (0.0002) as compared to other samples. Due to better magnetic properties, Ni0.5+xZn0.5‐xFe2O4 (x = 0.3) samples were used as magnetic feeders for EM antenna. Magnitude of EM waves from the antenna increased up to 186%.

Zn2+ substituted superparamagnetic MgFe2O4 spinel-ferrites: Investigations on structural and spin-interactions

“…Nano-spinel ferrites have drawn considerable attention of researchers owing to their fascinating and noticeably distinguishing characteristics than their corresponding bulk part. They have a wide range of applications in diverse fields like memory storage devices, high-density magnetic recording discs, ferrofluids, magnetocaloric refrigeration, hyperthermia, drug delivery, and many other biomedical applications [1][2][3][4][5][6]. A cubic spinel ferrite, having a variety of applications like catalysis, humidity sensing, magnetic technology, and biomedicine [7,8].…”

Mn0.8Zn0.2Fe2O4 nanoparticulates spinel ferrites: An approach to enhance the antenna field strength for improved magnitude versus offset (MVO)

“…Akhtar et al have used NiZn magnetic feeders for deep target hydrocarbon detection. They investigated initial permeability (106.23) for higher Ni concentration at the sintering temperature of 950 1C [28].…”