Feed rod for growing magnetic single crystal, magnetic single crystal, and method of producing a magnetic single crystal
AssigneeMurata Manufacturing Co., Ltd.
InventorMikio Geho
Life of this patent
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Abstract
A feed rod for growing a magnetic single crystal having a composition represented by the formula (Y3-aAa)(Fe5-b-cBb)O12-α, wherein A is at least one element selected from the lanthanoide series, B is at least one element selected from the group consisting of Ga, Al, In, and Sc, c is a value for decreasing the Fe content from the stoichiometric amount, α is a value for decreasing the oxygen content to satisfy the chemically neutral condition, and the relationships 0≦a≧0.5; 0≦b≧1.0; 0<c≧0.15 and 0<α are satisfied.
Claims4
A feed rod for growing a magnetic single crystal, the feed rod having a composition represented by the formula:
- (Y3-aAa)(Fe5-b-cBb)O12-α,
- wherein A is at least one element selected from the lanthanoide series;
- B is at least one element selected from the group consisting of Ga, Al, In, and Sc;
- c is a value which decreases the Fe content from a stoichiometric amount;
- α is a value which decreases the oxygen content to satisfy a chemically neutral condition;
- and the relationships 0≦a≧0.5, 0≦b≧1.0, 0<c≧0.15, and 0<α are satisfied.
A magnetic single crystal having a composition represented by the formula:
- (Y3-aAa)(Fe5-b-cBb)O12-α,
- wherein A is at least one element selected from the lanthanoide series;
- B is at least one element selected from the group consisting of Ga, Al, In, and Sc;
- c is a value which decreases the Fe content from a stoichiometric amount;
- α is a value which decreases the oxygen content to satisfy a chemically neutral condition;
- and the relationships 0≦a≧0.5, 0≦b≧1.0, 0<c≧0.15, and 0<α are satisfied.
A method for producing a magnetic single crystal, the method comprising:
- providing a feed rod for growing the magnetic single crystal, the feed rod having a composition represented by the formula:
- (Y3-aAa)(Fe5-b-cBb)O12-α,
- wherein A is at least one element selected from the lanthanoide series;
- B is at least one element selected from the group consisting of Ga, Al, In, and Sc;
- c is a value which decreases the Fe content from a stoichiometric amount;
- α is a value which decreases the oxygen content to satisfy a chemically neutral condition;
- and the relationships 0≦a≧0.5, 0≦b≧1.0, 0<c≧0.15, and 0<α are satisfied;
- providing a seed crystal for crystallization;
- and
- crystallizing the feed rod to form the magnetic single crystal.
Dependencies are inferred from the claim text.