The Department of Materials Science and Engineering invites you to join us for an upcoming Seminar:

Dr. Costel Constantin

Physics Department  
Seton Hall University

Host: Jerry Floro

Talk Title:      Growth, Electrical and Magnetic
Characterization of Nitride Dilute
Magnetic Semiconductors



Date: Monday, October 5th
Time: 4:00 to 5:00 PM
Refreshments: 3:30 to 4:00
Room: Wilsdorf 101


Abstract:

Spintronics is an emerging technology which exploits for the
first time the electrons’ spin while making use of their charge.    
While traditional electronics are based on charge carrier
control (e.g., n- or p-type), functional magnetic
semiconductors called dilute magnetic semiconductors (DMS)
would also allow control of the quantum spin (e.g., up or
down).  Future spintronic devices can take advantage of the
new type of electronic conduction control and can be quite
faster and more efficient as compared to the traditional
counterparts.  However, one of the greatest challenges in
making DMS useful is obtaining reliable Curie (i.e.,
ferromagnetic) transition temperature above 300K.  In this
presentation, I will present the current efforts in obtaining
reliable (e.g., above 300K) Curie temperature for manganese
doped gallium arsenite (MnGaAs) and manganese doped
gallium nitride (MnGaN) DMS materials.  I will describe the
growth, electrical and magnetic characterization of manganese
doped scandium nitride (MnScN) and iron doped scandium
nitride (FeScN) grown on scandium nitride/magnesium oxide
[ScN/MgO(001)] by molecular beam epitaxy as possible nitride
DMS materials.