| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead-free glass composition having a low fusion temperature, and to provide a magnetic head using the lead-free glass. SOLUTION: The lead-free glass composition contains, in mass% of oxide basis, >70% and≤78% Bi<SB>2</SB>O<SB>3</SB>, 13-20% B<SB>2</SB>O<SB>3</SB>, 5-7% ZnO, 0-5% Na<SB>2</SB>O, 0-2% K<SB>2</SB>O, 0-4% P<SB>2</SB>O<SB>5</SB>, 0-4% TeO<SB>2</SB>, 0-2% Sb<SB>2</SB>O<SB>3</SB>, 0-3% Li<SB>2</SB>O, 0-6% SiO<SB>2</SB>, and no PbO. The magnetic head is composed using the lead-free glass. COPYRIGHT: (C)2006,JPO&NCIPI
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