Alexander S. Tatarenko

Dr. Alexander S. Tatarenko

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Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 August 2004 in Physical Review B
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SSS. Shastry
S. Shastry
GSG. Srinivasan
G. Srinivasan
MBMirza Bichurin
Mirza Bichurin
VPVladimir Petrov
Vladimir Petrov
ATAlexander S. Tatarenko
Alexander S. Tatarenko
The first observation of microwave magnetoelectric (ME) interactions through ferromagnetic resonance (FMR) in bilayers of single crystal ferromagnetic-piezoelectric oxides and a theoretical model for the effect are presented. An electric field E produces a mechanical deformation in the piezoelectric phase, resulting in a shift δHE in the resonance field for the ferromagnet. The strength of ME coupling is obtained from data on δHE vs E. Studies were performed at 9.3GHz on bilayers of (111) yttrium iron garnet (YIG) films and (001) lead magnesium niobate-lead titanate (PMN-PT). The samples were positioned outside a TE102-reflection type cavity. Resonance profiles were obtained for E=0–8kV∕cm for both in-plane and out-of-plane magnetic fields H. Important results are as follows. (i) The ME coupling in the bilayers is an order of magnitude stronger than in polycrystalline composites and is in the range 1–5.4Oecm∕kOe, depending on the YIG film thickness. (ii) The coupling strength is dependent on the magnetic field orientation and is higher for out-of-plane H than for in-plane H. (iii) Estimated ME constant and its dependence on volume ratio for the two phases are in good agreement with the data.

6 August 2001 in Physical Review B
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Journal Article
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MBMirza Bichurin
Mirza Bichurin
IKI. A. Kornev
I. A. Kornev
VPVladimir Petrov
Vladimir Petrov
ATAlexander S. Tatarenko
Alexander S. Tatarenko
YKYu. V. Kiliba
Yu. V. Kiliba
GSG. Srinivasan
G. Srinivasan
A phenomenological theory is proposed to treat the magnetoelectric (ME) coupling at frequencies corresponding to ferromagnetic resonance in a multilayer composite consisting of alternate layers of piezoelectric and magnetostrictive phases. We discuss two models: (i) a simple two-layer (bimorph) structure and (ii) a generalized approach in which the multilayer structure is considered to be a homogeneous medium. Expressions for the stress induced shift δH in the ferromagnetic resonance field due to an applied electric field E have been obtained for both cases. For a bimorph, δH is directly proportional to the product of the applied electric field and the ME coupling constant. For a nickel ferrite–lead zirconate titanate (PZT) two layer structure, the theory predicts a factor of 5 stronger effect than in yttrium iron garnet-PZT. When the composite is considered to be a homogeneous medium, the corresponding shift δH is given by 2M0 (B33−B31) E, where M0 is the composite magnetization and B’s are the ME coefficients. For this model, a method for the calculation of magnetoelectric coefficients from experimental data is presented.

1 May 2006 in Applied Physics Letters
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ATAlexander S. Tatarenko
Alexander S. Tatarenko
GSG. Srinivasan
G. Srinivasan
MBMirza Bichurin
Mirza Bichurin
An electric field tunable yttrium iron garnet (YIG)-lead zirconate titanate (PZT) phase shifter based on ferromagnetic resonance (FMR) is designed and characterized. The electric field control of the phase shift δφ arises through magnetoelectric interactions. The piezoelectric deformation in PZT in an electric field E leads to a shift in the FMR frequency in YIG and a phase shift. For E=5–8kV∕cm applied across PZT, δφ=90°–180° and an insertion loss of 1.5–4dB are obtained. Theoretical estimates of δφ are in excellent agreement with the data.

27 April 2006 in Electronics Letters
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Journal Article
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ATAlexander S. Tatarenko
Alexander S. Tatarenko
VGV. Gheevarughese
V. Gheevarughese
GSG. Srinivasan
G. Srinivasan
An electric field tunable microwave bandpass filter based on ferromagnetic resonance (FMR) in a bilayer of yttrium iron garnet and lead zirconate titanate has been designed and characterised. The filter tunability is accomplished through magnetoelectric coupling that manifests as a shift in the FMR. Studies on a microstripline filter show a 125 MHz tuning range for E=0–3 kV/cm and an insertion loss of 5 dB at 6.5 GHz.

12 May 2005 in Electronics Letters
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Journal Article
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GSG. Srinivasan
G. Srinivasan
ATAlexander S. Tatarenko
Alexander S. Tatarenko
MBMirza Bichurin
Mirza Bichurin
The design and analysis of a new class of electric field-tunable ferrite-ferroelectric microwave bandpass filter is discussed. The tunability is possible through magnetoelectric interactions. When the composite is subjected to an electric field, the mechanical deformation due to piezoelectric effect manifests as a magnetic field shift in the ferromagnetic resonance for the ferrite. The electrical tuning is much faster than traditional magnetic tuning and has practically zero power consumption.

9 October 2006 in Applied Physics Letters
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Gopalan SrinivasanGopalan Srinivasan
Gopalan Srinivasan
IZI. V. Zavislyak
I. V. Zavislyak
ATAlexander S. Tatarenko
Alexander S. Tatarenko
Millimeter-wave magnetoelectric interactions have been studied through electric field effects on magnetic excitations in bilayers of single crystal barium ferrite and lead zirconate titanate (PZT). An electric field E produces a mechanical deformation in PZT, resulting in a shift δf in the frequency for electromagnetic modes in the ferrite. Reflected power versus frequency profiles at 40–55GHz for a series of bias magnetic field and E=0–10kV∕cm along the c axis of the ferrite showed an increase in δf to a maximum of 8MHz . Theoretical estimates of δf are in agreement with the data.