Abstract: A fluorine-containing ether compound represented by the following formula: R1-[B]-[A]-O—CH2—R2—CH2—O-[C]-[D]-R3 (R1 is an organic group having 7 to 18 carbon atoms, including a group in which a carbonyl carbon atom or nitrogen atom in an amide bond and an aromatic hydrocarbon are directly bonded; R2 is a perfluoropolyether chain; R3 is Formula (2); X1 is a hydrogen atom or an organic group having 7 to 18 carbon atoms, including a group in which a carbonyl carbon atom or nitrogen atom in an amide bond and an aromatic hydrocarbon are directly bonded; [A] is Formula (3-1); [B] is Formula (3-2); [C] is Formula (4-1); [D] is Formula (4-2); and the number of hydroxyl groups in Formula (1) is 3 or more).

Abstract: A method for evaluating a performance of a lubricating layer according to the present invention includes step of preparing a lubricant molecular model and a protective layer model, using quantum chemical calculation, step of performing molecular dynamics calculation of a lubricating layer initial model constructed from the lubricant molecular model and the protective layer model, and step of calculating an index of a degree of adsorption of lubricant molecules to the protective layer from a result of the molecular dynamics calculation.