Magnetic sensor and inspection device

A magnetic sensor, comprising:

• a sensor part including a magnetic element part and a first conductive member,
• the magnetic element part including a first magnetic element, a second magnetic element, a third magnetic element, and a fourth magnetic element,
• the first magnetic element including a first element portion and a first element other-portion,
• the second magnetic element including a second element portion and a second element other-portion,
• the third magnetic element including a third element portion and a third element other-portion,
• the fourth magnetic element including a fourth element portion and a fourth element other-portion,
• a direction from the first element portion toward the first element other-portion, a direction from the second element portion toward the second element other-portion, a direction from the third element portion toward the third element other-portion, and a direction from the fourth element portion toward the fourth element other-portion being along a first direction,
• the first element portion being electrically connected to the second element portion,
• the third element portion being electrically connected to the fourth element portion,
• the first element other-portion being electrically connected to the fourth element other-portion,
• the second element other-portion being electrically connected to the third element other-portion,
• the first conductive member including a first conductive portion, a second conductive portion, a first portion, a second portion, a third portion, and a fourth portion,
• a position in a second direction of the first portion being between a position in the second direction of the first conductive portion and a position in the second direction of the second conductive portion,
• the second direction crossing the first direction,
• a position in the second direction of the second portion being between the position in the second direction of the first portion and the position in the second direction of the second conductive portion,
• a position in the second direction of the third portion being between the position in the second direction of the second portion and the position in the second direction of the second conductive portion,
• a position in the second direction of the fourth portion being between the position in the second direction of the third portion and the position in the second direction of the second conductive portion,
• a first orientation from the first magnetic element toward the first portion being along a third direction crossing a plane including the first and second directions,
• a second orientation from the second magnetic element toward the second portion being a reverse of the first orientation,
• a third orientation from the third magnetic element toward the third portion being a same as the first orientation, and
• a fourth orientation from the fourth magnetic element toward the fourth portion being a reverse of the first orientation;
• a first circuit electrically connected to the first and second conductive portions, the first circuit being configured to supply a first current between the first conductive portion and the second conductive portion, the first current including an alternating current component;
• and
• a second circuit electrically connected to a first connection point and a second connection point, the first connection point being between the first element portion and the second element portion, the second connection point being between the third element portion and the fourth element portion, the second circuit being configured to supply a second current between the first connection point and the second connection point.

A magnetic sensor, comprising:

• a sensor part including a magnetic element part and a first conductive member,
• the magnetic element part including a first magnetic element, a second magnetic element, a third magnetic element, and a fourth magnetic element,
• the first magnetic element including a first element portion and a first element other-portion,
• the second magnetic element including a second element portion and a second element other-portion,
• the third magnetic element including a third element portion and a third element other-portion,
• the fourth magnetic element including a fourth element portion and a fourth element other-portion,
• a direction from the first element portion toward the first element other-portion, a direction from the second element portion toward the second element other-portion, a direction from the third element portion toward the third element other-portion, and a direction from the fourth element portion toward the fourth element other-portion being along a first direction,
• a second direction from the first magnetic element toward the fourth magnetic element crossing the first direction,
• a direction from the third magnetic element toward the second magnetic element being along the second direction,
• a direction from the third magnetic element toward the first magnetic element being along a third direction crossing a plane including the first and second directions,
• a direction from the second magnetic element toward the fourth magnetic element being along the third direction,
• the first element portion being electrically connected to the third element portion,
• the second element portion being electrically connected to the fourth element portion,
• the first element other-portion being electrically connected to the second element other-portion,
• the third element other-portion being electrically connected to the fourth element other-portion,
• the first conductive member including a first conductive portion, a second conductive portion, a first middle portion, and a second middle portion,
• the first middle portion being between the first conductive portion and the second conductive portion in the second direction,
• the second middle portion being between the first middle portion and the second conductive portion in the second direction,
• the first middle portion being between the third magnetic element and the first magnetic element in the third direction, and
• the second middle portion being between the second magnetic element and the fourth magnetic element in the third direction;
• a first circuit electrically connected to the first and second conductive portions, the first circuit being configured to supply a first current between the first conductive portion and the second conductive portion, the first current including an alternating current component;
• and
• a second circuit electrically connected to a first connection point and a second connection point, the first connection point being between the third element portion and the first element portion, the second connection point being between the second element portion and the fourth element portion, the second circuit being configured to supply a second current between the first connection point and the second connection point.

A magnetic sensor, comprising:

• a sensor part including a magnetic element part, a first conductive member, and a second conductive member,
• the magnetic element part including a first magnetic element, a second magnetic element, a third magnetic element, and a fourth magnetic element,
• the first magnetic element including a first element portion and a first element other-portion,
• the second magnetic element including a second element portion and a second element other-portion,
• the third magnetic element including a third element portion and a third element other-portion,
• the fourth magnetic element including a fourth element portion and a fourth element other-portion,
• a direction from the first element portion toward the first element other-portion, a direction from the second element portion toward the second element other-portion, a direction from the third element portion toward the third element other-portion, and a direction from the fourth element portion toward the fourth element other-portion being along a first direction,
• the first element portion being electrically connected to the third element portion,
• the second element portion being electrically connected to the fourth element portion,
• the first element other-portion being electrically connected to the second element other-portion,
• the third element other-portion being electrically connected to the fourth element other-portion,
• the first conductive member including a first conductive portion, a second conductive portion, and a first portion,
• a position of the first portion in a second direction being between a position of the first conductive portion in the second direction and a position of the second conductive portion in the second direction,
• the second direction crossing the first direction,
• the second conductive member including a third conductive portion, a fourth conductive portion, and a second portion,
• a position of the second portion in the second direction being between a position of the third conductive portion in the second direction and a position of the fourth conductive portion in the second direction,
• the fourth magnetic element being between the second magnetic element and the first magnetic element in a third direction crossing a plane including the first and second directions,
• the third magnetic element being between the fourth magnetic element and the first magnetic element in the third direction,
• the second portion being between the second magnetic element and the fourth magnetic element in the third direction,
• the first portion being between the third magnetic element and the first magnetic element in the third direction, and
• the fourth conductive portion being electrically connected to the second conductive portion;
• a first circuit electrically connected to the first and third conductive portions, the first circuit being configured to supply a first current between the first conductive portion and the third conductive portion, the first current including an alternating current component;
• and
• a second circuit electrically connected to a first connection point and a second connection point, the first connection point being between the first element portion and the third element portion, the second connection point being between the second element portion and the fourth element portion, the second circuit being configured to supply a second current between the first connection point and the second connection point.