Magnetic recording medium for microwave-assisted recording, magnetic recording device, and manufacturing method of magnetic recording medium

[0125]Hereinafter, the invention will be further described with reference to the examples. However, the invention is not limited to the aspect shown in the examples.

[0126]1. Ferromagnetic Powder

[0127]The following magnetic recording medium sample was manufactured and evaluated by using 10 kinds of ferromagnetic powders shown in Table 1. The manufacturing method of each ferromagnetic powder will be described later.

[0128]The coercivity Hc shown in Table 1 was measured at an application magnetic field of 1194 kA / m (15 kOe) by using a vibrating sample magnetometer (manufactured by Toei Industry Co., Ltd.).

[0129]The anisotropic magnetic field distribution of the ferromagnetic powder shown in Table 1 was obtained by the method described above by using a sample bottle made of an acrylic resin and a vibrating sample magnetometer (manufactured by Toei Industry Co., Ltd.). The acrylic resin has diamagnetism, and accordingly, a value of the anisotropic magnetic field distribution was obtained b