{"id":7991,"date":"2023-07-17T15:05:46","date_gmt":"2023-07-17T07:05:46","guid":{"rendered":"https:\/\/www.huashu-tech.com\/?p=7991"},"modified":"2024-02-27T19:25:18","modified_gmt":"2024-02-27T11:25:18","slug":"small-tilt-in-magnets-makes-them-viable-memory-chips","status":"publish","type":"post","link":"https:\/\/www.huashu-tech.com\/vi\/small-tilt-in-magnets-makes-them-viable-memory-chips\/","title":{"rendered":"\u0110\u1ed9 nghi\u00eang nh\u1ecf c\u1ee7a nam ch\u00e2m khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh chip nh\u1edb kh\u1ea3 thi"},"content":{"rendered":"

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u1ea1i h\u1ecdc California, Berkeley \u0111\u00e3 ph\u00e1t hi\u1ec7n ra m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p m\u1edbi \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i s\u1ef1 ph\u00e2n c\u1ef1c c\u1ee7a nam ch\u00e2m nano, m\u1edf \u0111\u01b0\u1eddng cho vi\u1ec7c l\u01b0u tr\u1eef m\u1eadt \u0111\u1ed9 cao chuy\u1ec3n t\u1eeb \u0111\u0129a c\u1ee9ng sang c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p.<\/p>\n

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Kho\u1ea3n t\u1ea1m \u1ee9ng, s\u1ebd \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o v\u00e0o th\u1ee9 Hai, ng\u00e0y 3 th\u00e1ng 8, trong\u00a0K\u1ef7 y\u1ebfu c\u1ee7a Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc Qu\u1ed1c gia<\/i>, c\u00f3 th\u1ec3 khi\u1ebfn m\u00e1y t\u00ednh b\u1eadt l\u00ean ngay l\u1eadp t\u1ee9c v\u00e0 ho\u1ea1t \u0111\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n nhi\u1ec1u nh\u01b0ng l\u1ea1i ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n \u0111\u00e1ng k\u1ec3.<\/p>\n

M\u1ed9t nh\u00f3m nghi\u00ean c\u1ee9u do Sayeef Salahuddin, ph\u00f3 gi\u00e1o s\u01b0 k\u1ef9 thu\u1eadt \u0111i\u1ec7n v\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh d\u1eabn \u0111\u1ea7u, \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng nam ch\u00e2m nghi\u00eang nh\u1eb9 gi\u00fap ch\u00fang d\u1ec5 d\u00e0ng chuy\u1ec3n \u0111\u1ed5i m\u00e0 kh\u00f4ng c\u1ea7n\u00a0t\u1eeb tr\u01b0\u1eddng b\u00ean ngo\u00e0i<\/a>. \u0110i\u1ec1u n\u00e0y m\u1edf ra c\u01a1 h\u1ed9i cho m\u1ed9t h\u1ec7 th\u1ed1ng b\u1ed9 nh\u1edb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i v\u00e0o b\u1ed9 vi x\u1eed l\u00fd, m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng h\u01b0\u1edbng t\u1edbi m\u1ee5c ti\u00eau gi\u1ea3m thi\u1ec3u\u00a0ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng<\/a>\u00a0trong \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i.<\/p>\n

Salahuddin cho bi\u1ebft: \u201c\u0110\u1ec3 gi\u1ea3m m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9, ch\u00fang t\u00f4i mu\u1ed1n c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t m\u1ed9t con chip m\u00e1y t\u00ednh c\u00f3 b\u1ed9 nh\u1edb sao cho g\u1ea7n v\u1edbi ho\u1ea1t \u0111\u1ed9ng t\u00ednh to\u00e1n\u201d. \u201cTuy nhi\u00ean, c\u01a1 s\u1edf v\u1eadt l\u00fd c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef l\u00e2u d\u00e0i kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi\u00a0m\u1ea1ch t\u00edch h\u1ee3p<\/a>.”<\/p>\n

T\u1ea1o v\u00e0 chuy\u1ec3n \u0111\u1ed5i c\u1ef1c trong nam ch\u00e2m m\u00e0 kh\u00f4ng c\u1ea7n ngu\u1ed3n b\u00ean ngo\u00e0i\u00a0t\u1eeb tr\u01b0\u1eddng<\/a>\u00a0\u0111\u00e3 l\u00e0 tr\u1ecdng t\u00e2m ch\u00ednh trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed h\u1ecdc spin. Vi\u1ec7c t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng c\u1ea7n c\u00f3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 kh\u00f4ng gian, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao nam ch\u00e2m v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o chip m\u00e1y t\u00ednh.<\/p>\n

Thay v\u00e0o \u0111\u00f3, c\u00f3 nh\u1eefng h\u1ec7 th\u1ed1ng ri\u00eang bi\u1ec7t d\u00e0nh cho b\u1ed9 nh\u1edb t\u1eeb t\u00ednh d\u00e0i h\u1ea1n. Ch\u00fang bao g\u1ed3m \u1ed5 \u0111\u0129a c\u1ee9ng c\u1ee7a m\u00e1y t\u00ednh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 c\u00e1c lo\u1ea1i b\u1ed9 nh\u1edb truy c\u1eadp ng\u1eabu nhi\u00ean ho\u1eb7c RAM kh\u00e1c nhau tr\u00ean c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p c\u1ee7a m\u00e1y t\u00ednh.\u00a0b\u1ed9 ph\u1eadn x\u1eed l\u00fd trung t\u00e2m; \u0111\u01a1n v\u1ecb x\u1eed l\u00fd trung t\u00e2m; B\u1ed9 ph\u1eadn \u0111i\u1ec7n t\u1eed Trung t\u00e2m<\/a>ho\u1eb7c CPU, n\u01a1i th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh v\u00e0 ho\u1ea1t \u0111\u1ed9ng logic.<\/p>\n

M\u1ed9t ph\u1ea7n l\u1edbn n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111i\u1ec7n to\u00e1n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u t\u1eeb lo\u1ea1i b\u1ed9 nh\u1edb n\u00e0y sang lo\u1ea1i b\u1ed9 nh\u1edb kh\u00e1c. L\u00e0m nh\u01b0 v\u1eady nhanh ch\u00f3ng s\u1ebd t\u1ed1n nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n v\u00e0 t\u1ea1o ra nhi\u1ec1u nhi\u1ec7t h\u01a1n.<\/p>\n

Trong nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y<\/a>Salahuddin v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng vi\u1ec7c truy\u1ec1n d\u00f2ng \u0111i\u1ec7n qua tantalum kim lo\u1ea1i hi\u1ebfm s\u1ebd t\u1ea1o ra s\u1ef1 ph\u00e2n c\u1ef1c trong nam ch\u00e2m m\u00e0 kh\u00f4ng c\u1ea7n c\u00f3 t\u1eeb tr\u01b0\u1eddng b\u00ean ngo\u00e0i. Nh\u01b0ng tr\u1eadn chi\u1ebfn v\u1eabn ch\u01b0a k\u1ebft th\u00fac.<\/p>\n

Vi\u1ec7c \u0111\u00f3ng g\u00f3i \u0111\u1ee7 s\u1ed1 l\u01b0\u1ee3ng nam ch\u00e2m nano v\u00e0o m\u1ed9t con chip c\u00f3 ngh\u0129a l\u00e0 s\u1eafp x\u1ebfp ch\u00fang vu\u00f4ng g\u00f3c, nh\u01b0ng h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng \u0111\u00f3 \u0111\u00e3 ph\u1ee7 nh\u1eadn t\u00e1c \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed5i c\u1ee7a tantalum.<\/p>\n

Salahuddin cho bi\u1ebft: \u201cCh\u00fang t\u00f4i nh\u1eadn th\u1ea5y r\u1eb1ng b\u1eb1ng c\u00e1ch nghi\u00eang nam ch\u00e2m \u2013 ch\u1ec9 2 \u0111\u1ed9 l\u00e0 \u0111\u1ee7 \u2013 b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 l\u1ee3i \u00edch c\u1ee7a c\u00f4ng t\u1eafc t\u1eeb m\u1eadt \u0111\u1ed9 cao m\u00e0 kh\u00f4ng c\u1ea7n t\u1eeb tr\u01b0\u1eddng b\u00ean ngo\u00e0i\u201d.<\/p>","protected":false},"excerpt":{"rendered":"

University of California, Berkeley, researchers have discovered a new way to switch the polarization of nanomagnets, paving the way for high-density storage to move from hard disks onto integrated circuits.   The advance, to be reported Monday, Aug. 3, in the\u00a0Proceedings of the National Academy of Sciences, could lead to computers that turn on in<\/p>","protected":false},"author":1,"featured_media":8001,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1,321],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts\/7991"}],"collection":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/comments?post=7991"}],"version-history":[{"count":1,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts\/7991\/revisions"}],"predecessor-version":[{"id":8002,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts\/7991\/revisions\/8002"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/media\/8001"}],"wp:attachment":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/media?parent=7991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/categories?post=7991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/tags?post=7991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}