Novel EM antenna based on Y3Fe5O12 magnetic feeders for improved MVO

Sea bed logging (SBL) is a new method for detection of hydrocarbon reservoir beneath the seabed. A powerful electromagnetic (EM) antenna having strong EM waves is required for the transmission of EM signal underneath the seabed for deep target exploration which is still remains a challenge. A new aluminium transmitter with yttrium iron garnet (Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf>) based magnetic feeders was developed in a scale tank to increase the magnitude of the magnetic field. Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> were prepared by using Modified Conventional Mixing Oxide (MCMO) technique. The samples were sintered at 750°C, 950°C, 1150°C and 1350°C to get required characteristics of garnet nanoparticles. Characterizations of Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> were done by using XRD, RAMAN, FESEM and Impedance network analyzer. X-ray diffraction results revealed that best Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> phase was appeared at the sintering temperature of 1350°C. Nanoparticles sizes ranging from 60 to 100nm were obtained by using MCMO method. Raman results also demonstrate the confirmation of garnet structure of Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> sample at 1350°C. Field emission scanning electron microscopy (FESEM) was used to see the morphology of the Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> nanoparticles. Magnetic characterization results showed that Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> at 1350°C has high Initial permeability (30.8773) and high Q-factor (45.719), where as low loss factor (0.0001) was also investigated. Samples having high Q factor were chosen for EM antenna. Simulations of new EM antenna were done by using CST software. It was observed that magnitude of this EM waves were increased up to 166% in scale tank using novel EM antenna. It was also found from the results of Finite element (FE) modelling of the scaled tank that the magnitude of B field increased by using Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> magnetic feeders on EM antenna.

[1]  K. Koziol,et al.  Carbon nanotubes fibres/aluminium-NiZnFe2O4 based electromagnetic transmitter for improved magnitude versus offset (MVO) in a scaled marine environment. , 2012, Journal of nanoscience and nanotechnology.

[2]  H. M. Zaid,et al.  Magnitude verses offset study with EM transmitter in different resistive medium , 2011 .

[3]  H. M. Zaid,et al.  Synthesis and Characterizations of ZnO Nanoparticles for Application in Electromagnetic Detectors , 2011 .

[4]  H. M. Zaid,et al.  Development of EM Wave Guide Amplifier Potentially used for Sea Bed Logging , 2011 .

[5]  K. Khalid,et al.  Garnet ferrite (Y3Fe5O12) nanoparticles prepared via modified conventional mixing oxides (MCMO) method , 2009 .

[6]  M. Mozaffari,et al.  Preparation of nano-sized Al-substituted yttrium iron garnets by the mechanochemical method and investigation of their magnetic properties , 2009 .

[7]  N. Yahya,et al.  Development Of Y3Fe5O12 Nano‐Magnetic Feeder For Em Source Of An Intelligent Horizontal Twin Dipoles , 2009 .

[8]  N. Yahya,et al.  High Saturation Induction for Bi-Substituted Yttrium Iron Garnet Prepared Via Sol Gel Technique , 2007 .

[9]  R. Lebourgeois,et al.  The electromagnetic properties of Cu-substituted garnets with low sintering temperature , 2007 .

[10]  Sasanka Deka,et al.  Characterization of nanosized NiZn ferrite powders synthesized by an autocombustion method , 2006 .

[11]  A. Bhattacharya,et al.  Size-dependent magnetic properties of nanocrystalline yttrium iron garnet powders , 2006 .

[12]  R. Pasricha,et al.  A Novel Low‐Temperature Synthesis of Nanosized NiZn Ferrite , 2005 .

[13]  I. Ismail,et al.  Preparation and characterization of aluminum substitute yttrium iron garnet nanoparticles by sol–gel technique , 2005 .

[14]  H. Westerdahl,et al.  Excitation of a long wire antenna - antennas from 200 MHz to 1 Hz , 2004, Proceedings of the Tenth International Conference on Grounds Penetrating Radar, 2004. GPR 2004..

[15]  Hua-gui Zheng,et al.  Structure and magnetic properties of SnFe2O4 nanoparticles , 2004 .

[16]  F. Gnanam,et al.  Initial permeability studies of Ni–Zn ferrites prepared by flash combustion technique , 2003 .

[17]  Svein Ellingsrud,et al.  The Meter Reader—Remote sensing of hydrocarbon layers by seabed logging (SBL): Results from a cruise offshore Angola , 2002 .

[18]  Lucy MacGregor,et al.  Sea Bed Logging (SBL), a new method for remote and direct identification of hydrocarbon filled layers in deepwater areas , 2002 .

[19]  M. Pardavi-Horvath,et al.  Microwave applications of soft ferrites , 2000 .

[20]  S. Date,et al.  Effect of Cu substitution on the magnetic and electrical properties of Ni–Zn ferrite synthesised by soft chemical method , 1999 .

[21]  M. López-Quintela,et al.  Influence of Complexing Agents and pH on Yttrium−Iron Garnet Synthesized by the Sol−Gel Method , 1997 .

[22]  M. Crosnier-Lopez,et al.  Synthesis and Characterization of Yttrium Iron Garnet Nanoparticles , 1996 .

[23]  K. Yamaguchi,et al.  Preparation of Bi-Substituted YIG Garnets by Sol-Gel Synthesis and Their Magnetic Properties , 1991, IEEE Translation Journal on Magnetics in Japan.

[24]  B. Ferrand,et al.  Heteroepitaxial growth of single crystal films of YIG on GdGaG substrates by hydrothermal synthesis , 1972 .