Pressure sensor, microphone, blood pressure sensor, and touch panel

A pressure sensor comprising:

• a support;
• a film unit supported by the support, the film unit having an upper surface, and being deformable;
• and
• a first sensing element provided on the upper surface,
• the first sensing element including:
• a first magnetic layer, a magnetization of the first magnetic layer being configured to change in accordance with a deformation of the film unit;
• a second magnetic layer provided apart from the first magnetic layer in a direction crossing the upper surface;
• and
• a first intermediate unit including a first intermediate layer including a portion provided between the first magnetic layer and the second magnetic layer,
• the first magnetic layer extending in a first direction parallel to the upper surface, a first major axis length of the first magnetic layer in the first direction being longer than a first minor axis length of the first magnetic layer in a second direction parallel to the upper surface and crossing the first direction, and
• the second magnetic layer extending in the second direction, a second major axis length of the second magnetic layer in the second direction being longer than a second minor axis length of the second magnetic layer in the first direction.