Synthesis and Characterization of multifunctional mixed metal oxide

Synthesis and Characterization of multifunctional mixed metal oxide

1. 1 Synthesis and Characterization of multifunctional mixed metal oxide

2. Layout… Introduction Publications stats Multiferroic Phenomenon Multiferroic orders Why multiferroics are fewer in nature Crystal structure of BiFeO 3 Properties of BFO Motivation Synthesis flowchart Characterization techniques Results and Discussions Applications 2

3. Introduction 3

4. Introduction Primary Ferroic orders: Ferromagnetism Ferroelectricity Ferroelasticity 4 Crystals can be defined as multiferroic crystals when more than one primary Ferroic properties exist in the same phase Switchable domains

5. introduction 5

6. very few Magnetic ferroelectric in nature. why? Chemistry promotes often functionality and prohibits the other 6

7. Crystal structure of BiFeO 3 Perovskite structure A B T N = 643˚K T C = 1103˚K a =3.96 Å or α=89.14   7

8. Properties of BFO 8 GOOD POINTS CHALLENGES High current leakage High coercive field S mall remnant polarization Environmental friendly Ferroelectric/anti-ferromagnetism High curie temperature

9. Motivation 9

10. Synthesis flowchart 10

11. CHARACTERIZATION TECHNIQUES TGA Crystallization temperature XRD Structure of BFO FTIR Stretching vibration of Fe and O SEM Morphology 11

12. Results and discussion XRD 12 XRD patterns of BiFeO3 (a) as synthesized powder, then calcined powders in the air for 1 h at (b) 400 ◦C, (c) 450 ◦C, (d) 500 ◦C, (e) 550 ◦C, (f) 600 ◦C and (g) pellet sintered in air at 500 ◦C for 2 h. Peaks labeled with JCPD card No. 01-072-7678.

13. RESULTS AND DISCUSSION SEM 13 SEM micrographs of BiFeO3 powders calcined for 1 h at (a) 400 ◦C, (b) 550 ◦C, (c) 600 ◦C and (d) pellet sintered at 500 ◦C for 2 h

14. Applications of BFO powder Information storage devices Sensors Spintronics devices Microelectronic devices 14

15. ACKNOWLEDGEMENT Dr. Waqar Mehmmod (HOD) Physics Department (FJWU) Ms. Anum Zaidi (Supervisor ) FJWU Dr. Saif Ullah Awan (Co-supervisor ) NCP ALL THE STAFF AND MANAGEMENT OF FJWU AND NCP. 15

16. THANK YOU 16