Magnetic sensor including a multilayer structure comprising a piezomagnetic component, a magnetostrictive component and a piezoelectric component

A magnetic sensor used to detect a measured magnetic field HDC, comprising:

• a piezomagnetic component,
• a magnetostrictive component, and
• a piezoelectric component,
• wherein said piezomagnetic component includes a first piezomagnetic element and a second piezomagnetic element that are arranged opposite to each other,
• said magnetostrictive component includes a first magnetostrictive element and a second magnetostrictive element that are arranged opposite to each other on the same side or normal side of said first piezomagnetic element and said second piezomagnetic element, respectively,
• said piezoelectric component includes a first piezoelectric element deposited underneath said first piezomagnetic element, a second piezoelectric element deposited underneath said second piezomagnetic element, a third piezoelectric element deposited underneath said first magnetostrictive element, and a fourth piezoelectric element deposited underneath said second magnetostrictive element;
• wherein said first piezoelectric element and said second piezoelectric element are electrically connected to a power supply circuit, and produce first deformation, said first deformation is applied to said first piezomagnetic element and said second piezomagnetic element to produce an alternating magnetic field HAC,
• said alternating magnetic field HAC is stacked to the measured magnetic field HDC to form a magnetic circuit, so that said first magnetostrictive element produces second deformation, and said second magnetostrictive element produces third deformation, said second deformation and said third deformation produce a first electric potential and a second electric potential on said third piezoelectric element and said fourth piezoelectric element, respectively, and said magnetic sensor calculates the magnetic field intensity of the measured magnetic field HDC based on said first electric potential and said second electric potential.