Magnetic bubble - Awajiku

Japanese: 泡磁区 - あわじく
Magnetic bubble - Awajiku

…Circular magnetic domains that occur in thin single crystals of garnet or ferrite, which are thin magnetic bodies that are easily magnetized perpendicular to the film and are extremely uniform in the plane, are called bubble domains or magnetic bubbles. In such materials, the regions magnetized perpendicular to the film, upward, and downward, usually have an equal area, forming a labyrinth-like magnetic domain structure. If a magnetic field is applied perpendicular to the film, the upward magnetized regions become stable, causing the upward magnetic domains to expand and the downward magnetic domains to shrink. …

*Some of the terminology that refers to "bubble domains" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…薄い磁性体で,膜垂直方向に磁化しやすく,かつ面方向にきわめて均質な,ガーネットやフェライトの薄膜単結晶内に発生する円形の磁区を泡磁区(バブル磁区),あるいは磁気バブルという。こうした材料では通常,膜垂直上方向に磁化した領域と下方向に磁化した領域がそれぞれほぼ等しい面積になるように,互いに迷路状に入り組んだ形の磁区構造を形成するが,これに例えば面垂直方向上向きの磁界をかけていくと,上向きに磁化した領域が安定になるため,上向きの磁区が広がり,下向きの磁区が細く縮小していく。…

※「泡磁区」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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