公开(公告)号：US10246796B2

公开(公告)日：2019-04-02

申请号：US15429164

申请日：2017-02-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Isao Tashiro ,  Hidenao Kataoka ,  Yoshio Okayama ,  Nobuyuki Yokoyama ,  Yoshifumi Takasu

IPC: C01F17/00 ,  C30B29/22

Abstract: A RAMO4 substrate containing an RAMO4 base material part containing a single crystal represented by the general formula RAMO4 (wherein R represents one or a plurality of trivalent elements selected from a group of elements including: Sc, In, Y, and a lanthanoid element, A represents one or a plurality of trivalent elements selected from a group of elements including: Fe(III), Ga, and Al, and M represents one or a plurality of divalent elements selected from a group of elements including: Mg, Mn, Fe(II), Co, Cu, Zn, and Cd), the RAMO4 base material part having a beveled portion at an edge portion thereof.