US Patent:
20190027173, Jan 24, 2019
Inventors:
- Cupertino CA, US
Pin-Wei HUANG - Fremont CA, US
Ganping JU - Pleasanton CA, US
Yingguo PENG - San Ramon CA, US
Li GAO - San Jose CA, US
Timothy J. KLEMMER - Union City CA, US
Kai-Chieh CHANG - Pleasanton CA, US
Yukiko KUBOTA - Campbell CA, US
Florin ZAVALICHE - San Ramon CA, US
Xiaobin ZHU - San Ramon CA, US
Qihong WU - Dublin CA, US
Hassib AMINI - Fremont CA, US
Jan-Ulrich THIELE - Sunnyvale CA, US
International Classification:
G11B 5/65
G11B 5/66
G11B 5/84
G11B 5/02
Abstract:
An apparatus is disclosed. The apparatus includes a first write layer, a second write layer, and a storage layer. The first write layer is disposed over the storage layer. The second write layer is disposed over the first write layer. The anisotropy field of the storage layer is greater than anisotropy field of the first write layer. The anisotropy field of the first write layer is greater than anisotropy field of the second write layer. The Curie temperature of the second write layer is greater than the Curie temperature of the first write layer. The Curie temperature of the first write layer is greater than a Curie temperature of the storage layer.