Patent ID: 9583535
Date: 2017-02-28
CPC Classifications: H01L

Claim:
1. A magnetoresistive memory device comprising: a substrate; a first oxide film provided on the substrate; bottom electrodes provided in the first oxide film, a part of each of the bottom electrodes protruding above the first oxide film; magnetoresistive elements provided on the respective bottom electrodes; sidewall nitride films provided on side surfaces of the parts of the respective bottom electrodes and side surfaces of the respective magnetoresistive elements, wherein side surfaces of the sidewall nitride films are continuous over the side surfaces of the parts of the respective bottom electrodes and the side surfaces of the respective magnetoresistive elements, and the side surfaces of the sidewall nitride films are smoothly connected; a second oxide film provided on the magnetoresistive elements, the sidewall nitride films and the first oxide film; top electrodes provided in the second oxide film and connected to the respective magnetoresistive elements; and contact electrodes provided in the second oxide film and the first oxide film to reach the substrate from an upper surface of the second oxide film.