Spin torque oscillator with high spin torque efficiency and reliability

A magnetic write element, comprising:

• a magnetic write pole;
• a trailing magnetic shield;
• and
• a magnetic oscillator located between and contacting the magnetic write pole and the magnetic trailing shield, the magnetic oscillator further comprising:
• a magnetic spin polarization layer;
• a magnetic field generation layer;
• and
• a nonmagnetic intermediate layer between the magnetic spin polarization layer and the magnetic field generation layer, the nonmagnetic intermediate layer comprising an Alloy of Ag and an element X, where X is selected from the group consisting of Zn and Sn.

A magnetic data recording system, comprising:

• a housing;
• a magnetic media held within the housing;
• an actuator held within the housing;
• a slider connected with the actuator for movement adjacent to a surface of the magnetic media;
• and
• a write element formed on the slider, the write element further comprising:
• a magnetic write pole;
• a trailing magnetic shield;
• and
• a magnetic oscillator located between and contacting the magnetic write pole and the magnetic trailing shield, the magnetic oscillator further comprising:
• a magnetic spin polarization layer;
• a magnetic field generation layer;
• and
• a nonmagnetic intermediate layer between the magnetic spin polarization layer and the magnetic field generation layer, the nonmagnetic intermediate layer comprising an Alloy of Ag and an element X where X is selected from the group consisting of Zn and Sn.