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Information on Doctoral thesis of Fellows Pham Anh Duc

1. Full name: Pham Anh Duc                                          2. Sex: Man

3. Date of birth: 10/05/1982                                            4. Place of  birth: Hai Phong city

5. Admission decision number: 3613/QĐ-SĐH      Dated: 22/10/2009

6. Changes in academic process: No

7. Official thesis title: Fabrication and investigation of magnetoelectric composites with amorphous and nanocrystalline magnetostriction layer for micro-tesla magnetic sensors

8. Major: Nano materials and devices                             9. Code:

10. Supervisors:  Assoc.Prof. Dr. Do Thi Huong Giang

                           Prof.Dr. Nguyen Huu Duc

11. Summary of the new findings of the thesis:

Successful fabrication of magnetoelectric materials structures in Terfecohan/PZT thin films by using sputtering and laminated composites Metglas/PZT by bonding method.

Thin film Terfecohan has been annealing at 3500C appeared nanocrystal structure and enhanced magnetic, magnetostrictive, magnetoelectric properties for magnetic sensor application.

Obtained results in magnetic, magnetostriction and magnetoelectric showed that the sandwich structure in dimension of 15x1 mm2 offers the highest magnetoelectric effect at low magnetic field. This is the optimum configuration for low magnetic sensor application.

Successful modelling and simulation in shear lag effect, demagnetization and vibration effect applied for resonant frequencies and magnetoelectric effect tendencies in laminated composites.

Successful manufacturing and packaging a sensor prototype for geomagnetic measurement. A magnetic field sensing of a high sensitivity of 653,215 mV/Oe and high resolution of 3.10-4 Oe as well as an angular sensing with an accuracy of 10-1 degree have been achieved.

Successful manufacturing sensors prototype (1D, 2D and 3D). These sensors can determine the magnitude and direction of geomagnetic in space with high sensitivity and resolution.

12. Practical applicability:

Geomagnetic sensors (1D, 2D and 3D) combine with the display device as the new generation compass and used in automated control systems.

13. Further research directions:

Development of sensors for application to current measurement devices, heart rate measurement devices, magnetic nanoparticle detection devices and biosensors.

14. Thesis-related publications:

a) Đỗ Thị Hương Giang, Phạm Anh Đức, Nguyễn Thị Ngọc, Nguyễn Thế Hiện, Nguyễn Hữu Đức (2012), “Enhancement of the Magnetic Flux in Metglas/PZT – Magnetoelectric Integrated 2D Geomagnetic Device”, Journal of Magnetics, 17(4), 308 – 315

b) Đỗ Thị Hương Giang, Phạm Anh Đức, Nguyễn Thị Ngọc, Nguyễn Thế Hiện, Nguyễn Hữu Đức (2012), “Spatial angular positioning device with three – dimensional magnetoelectric sensors”, Review of scientific instruments, 83, 095006

c) Đỗ Thị Hương Giang, Phạm Anh Đức, Nguyễn Thị Ngọc,Nguyễn Hữu Đức (2012), “Geomagnetic sensors based on Metglas/PZT laminates”, Sensors and Actuators A, A179, 78 – 82

d) Phạm Anh Đức, Đỗ Thị Hương Giang, Nguyễn Thị Ngọc, Nguyễn Hữu Đức (2013), “Nghiên cứu, tối ưu cấu hình và mô phỏng lý thuyết hiệu ứng từ điện trên các vật liệu tổ hợp Metglas/PZT”, SPMS 2013

e) Phạm Anh Đức, Nguyễn Thị Ngọc, Lê Khắc Quynh, Nguyễn Hữu Đức, Đỗ Thị Hương Giang (2015), “Chế tạo và nghiên cứu màng mỏng từ - điện Terfercohan/PZT cấu trúc nano”, SPMS2015

 Tuấn Đức - VNU UET
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