Dr. Abdel-Latif Ihab

Phd
EAEA

  
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  member of   Engineering and Scientific Research Groups

 

Activities

 

List of publications achieved by

Ihab A. Abdel-Latif

 

1. Neutron Guide Facility at the ET-RR-1 Reactor, J. Phys. Soc. Jpn. 65 (1996), p 238.

2. Neutron Spectrum Measurements from a Neutron Guide Tube Facility at the ET-RR-1 Reactor, Egypt. J. Phys., 29 No.1, (1998), p 238.

3. A Reverse Time Of Flight Analyzer at the ET-RR-1 Reactor, Egypt. J. Phys., 29 No.1, (1998), p 103.

4. Performance and Main Characteristic Parameters of the Cairo Fourier Diffractometer Facility at the ET-RR-1 Reactor, IAEA Rep., Viena, INDC (EGY)-007, May 1997.

5. CFDF – A New Fourier RTOF-Diffractometer for Stress and Powder Diffraction Investigation, J. Neutron Research, V. 6, (1998), p 1.

6. Assessment and the Characteristic parameters of the Cairo Fourier Differactomter Facility, Nucl. Inst. & Meth., V. A 398 (1997), p 295.

7. On the Performance of the Neutron Guide Facility at the ET-RR-1 Reactor, Egypt. J. Phys., 30, No. 2, (1999), p 199.

8. Literature Review on Neutron Diffraction Measurements For Stress Studies, ARE AEA Report No 305.

9. Stress Measurements Using the CFDF, Proc. Of 2nd Conf. on Nuclear & Particle Physics, 13-17 Nov. 1999, Cairo, Egypt p 508.

10. Nonrandom Cation Distribution and Conductive properties of orthoferrites, Abstract Book of ICAME 2001, Oxford, UK, p 39.

11. Transport Phenomena and Band Energy of Ferrimanganite Structure NdFexMn1-xO3, Abstract Book of International Conf. Of “Magnetic Materials and Their Applications”, Minsik, 2002, p 62.

12. Synthesis, Structure and Properties of Sr-doped Neodymium Ferrimanganite, Proc. Of International Conf. Of “Physics of Electronic Materials and Their Applications”, Kaluga, 2002, Russia, p 224.

13. Crystal Structure, Electric and Magnetic Properties of Ferrimanganite NdFexMn1-xO3, Izv. RAS, Physical Series, V. 67, No 7, 2003, p 1072, (in Russian).

14. Transport Phenomena of Ferrimanganite Structure Nd0.65Sr0.35FexMn1-xO3, Izv. Vyzov Physica, No 10, 2003, p 24 (in Russian)

15. Mossbauer Effect and Electrical Conductivity Studies of SmFexMn1-xO3 (x=0.7, 0.8 and 0.9), Abstract Book of ICAME 2003, Masskat p T8/19.

16. Mossbauer Spectroscopy Studies of Nd0.65Sr0.35FexMn1-xO3, Abstract Book of ICAME 2003, Masskat p T5/1.

17. The influence of Sr-doping on the crystal and the magnetic structure of ferrimanganite Neodymium,, presented in the 9th Inter. Workshop of crystallography, Assiut, 27Nov. – 2Dec. 2004, p 94.

18. Mossbauer Effect and Electrical Conductivity Studies of SmFexMn1-xO3 (x=0.7, 0.8 and 0.9), Journal of Alloys and Compounds, 387, 2005, p, 70.

19. Electronic and Magnetic Properties of SmFe1-xMnxO3 Orthoferrites (x = 0.1, 0.2 and 0.3), J. Appl. Phys., 97, 10A, 2005 p 504,.

20. On the structure and transport mechanism of Nd0,65Sr0,35Mn1-XFeXO3 solid solution (X=0, 0.2, 0.4, 0.8), Arab. J. Nucl. Sc. Appl., V. 40, I, 2007, p 167.

21. Electrical and Magnetic Properties – Structure Correlation on Nd0.65Sr0.35FexMn1-xO3, Egypt. J. Solids , V. 29, II, 2006, p. 341.

22. Study on Preparation and Structural Analysis of Yb0.6Sr0.4MnxFe1-xO3 Study, Abstract book of SNI 2006 conf., Hamburg, 2006. D-P 369.

23. Optimization of the Cairo Fourier Diffractometer Facility for the Polarized Neutron Diffraction Measurements, Abstract book of SNI 2006 conf., Hamburg, 2006. M-P1.

24. Preparation and Structural Characterization of Eu0.65Sr0.35FexMn1-xO3, Accepted in Egypt. J. Solids to be published in Vol. 30, 2007.

25. The influence of tilt angle on the CMR in Sm0.6Sr0.4MnO3, Accepted in Journal of Alloys and Compounds 2007.

 

 

 

 

 

 

SUMMERY

of

Ph.D thesis

 

 

“ MAGNETIC ORDERING AND ELECTRIC PROPERTIES OF Nd AND Sm FERRIMANGANITES WITHIN PEROVSKITE LIKE STRUCTURE”

 

By

 

Ihab Abdel-Latif Abdel-Latif

 

 

Kazan State University

 

Condensed Matter Physics

 

2003

 

 

In this thesis, the structure, electrical and magnetic properties of ferrimanganites Nd and Sm studies were studied. The subject of such research was chosen because the world scientific attention which was concentrated on studying the unusual magnetic and electrical properties of perovskite manganese oxides RyA1-yMO3 (R is a rare earth element, A is a divalent element like Ca, Sr, Ba,…and M is a transition metal element) during last decades.

SmFexMn1-x O3 , NdFexMn1-x O3 and Nd0.65Sr0.35FexMn1-x O3 were studied. NdFexMn1-x O3 and Nd0.65Sr0.35FexMn1-x O3 were prepared in Kazan state University while SmFexMn1-x O3 was taken from Moscow State University. All samples were prepared using solid state reaction.

X-ray and neutron diffraction measurements were performed for structural characterization.

Electrical resistivity and thermoelectric power properties were investigated for all samples while magnetization for  Nd0.65Sr0.35FexMn1-x O3 was carried out.

Mossbauer spectra were measured for all samples.

The main conclusions of this thesis:

*Neutron diffraction measurements of Nd0.65Sr0.35Fe0.6Mn0.4 O3  showed that it has ferromagnetic ordering at 120k and room temperature. The magnetic ordering changed to weak ferromagnetic ordering at 520k. For NdFe0.6Mn0.4O3  neutron diffraction at room temperature and 114K showed that this compound has weak ferromagnetic ordering.

*The activation energy is directly proportional to the volume of unit cell of the Nd0.65Sr0.35FexMn1-x O3 samples.

*The nonrandom cation distributions (in the 3d lattice site) model was proposed for interpretation the Mossbauer spectra of SmFexMn1-x O3 and NdFexMn1-x O3.

*Coexistence of  ferromagnetic and  weakferromagnetic ordering in Nd0.65Sr0.35FexMn1-x O3 where x<0.8.

 

 

SUMMERY

of

M.Sc thesis

 

 

“ NEUTRON SPECTRUM MEASUREMENTS USING NEUTRON GUIDE FACILITY”

 

By

 

Ihab Abdel-Latif Abdel-Latif

 

 

Cairo University

 

Experimental Physics

 

1997

 

 

 

 

MSc thesis deals with spectrum and flux measurements performed at the exit of the neutron guide facility which was installed in front of the horizontal channels of the ET-RR-1 reactor. This Neutron guide is one of the important parts of the Cairo Fourier Diffractometer Facility CFDF. This diffractometer consists of a curved neutron guide 22m length followed by Fourier chopper. Straight neutron guide 3m length was installed after Fourier chopper and four detector elements were arranged at 2q=90°.

These measurements were carried out in order to evaluate the performance of the neutron guide. The spectrum from its exit is compared with the calculated one. It was used different methods for measuring flux at different positions (Calibrated detector and gold foils). Spectrum from the Straight neutron guide

The main results:

The comparison between the neutron guide facility in GKSS (FSS facility) and ours showed that neutron flux values are closed in spite of the GKSS reactor is higher flux than ET-RR-1 reactor.

The neutron flux from curved neutron guide ~ 6.67´106 neutrons.cm-2.s-1.

The neutron flux from straight neutron guide ~ 1.12´106 neutrons.cm-2.s-1.

The neutron flux at the sample position ~ 1.05´106 neutrons.cm-2.s-1.

The spectrum which measured at the sample position was compared with calculated and good agreement was achieved.

 

 

 
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