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                                宏源棋牌 > 技术园地 > 正文

                                什么是MRAM(不挥发性磁性随机存储器)及MRAM原理、应用比较

                                2010-10-12 13:26来源:中国存储网
                                导读:MRAM磁性随机存储器相关的磁电阻效应和自旋电子学,较详尽地综述了MRAM的发展、工作原理、性质与应用,MRAM最大的特点是非挥发性(Non-Volatile)。

                                1.前言

                                CUNCHUQISHIJISUANJIYINGJIANXITONGWUDAZUCHENGBUFENZHIYI,QIZHUYAOGONGNENGSHICUNFANGCHENGXUHESHUJU,TAXIANGRENDEDANAOYIYANGJUYOUJIYIGONGNENGBINGNENGZAIJISUANJIDEYUNXINGGUOCHENGZHONGZIDONGWANCHENGZHILING、SHUJUHECHENGXUDECUNCHU。ZUOWEICUNCHUQIMUQIANZHUYAOFENWEICISHI、GUANGDIANSHIHEBANDAOTISANLEI,TAMENZAIDIANZIXINXIYUSHEBEIZHONGDOUSHIBUKEQUESHAODEJIBENZUCHENGBUFEN。GENJUZAIDUANDIANQINGKUANGXIANENGFOUBAOCUNTUXIANG、SHENGYINHESHUJUDENGXINXILAIKAN,CUNCHUQIYOUFENWEIHUIFAXINGYUFEIHUIFAXINGLIANGDALEI。YOUYUCIXINGCUNCHUQISHILIYONGCIXINGWUZHIDECIXINGZHICHENGDE,ZAIJISUANJIYICHUXIANSHIJIUYIFEIHUIFAXINGZUOWEIYINGPANSHIYONGERBUDUANFAZHANZHE。DANZAIMANZUQINGBODUANXIAODEYAOQIUSHANG,CIXINGYUGUANGDIANCUNCHUQIQUENANYISHENGREN。SUIZHEDIANZIXINXITEBIESHIJISUANJIJISHUDEFAZHAN,CIXINGCUNCHUQIYEZAIBUDUANGEXIN。

                                FEIHUIFAXING、GAOCUNQUSUDU、DIZHIZAOCHENGBEN、ZHICHENGJIANDAN、CUNCHUMIDUGAO、HAODIANLIANGDIYUKEYIWUXIANCAXIEDENGSHIWEILAICUNCHUQISHICHANGFAZHANDEZHUYAOQUSHI。RANERZHIDAOMUQIANHAIWUYILEINENGQUANBUMANZUSHANGSHUYAOQIUDECUNCHUQIKAIFACHULAI。DANCONGXIAOXINGHUA、FEIHUIFAXINGDENGFANGMIANKAN,BANDAOTICUNCHUQIYOUQISHICIXINGSUIJICUNCHUQI(Magnetic Random Memory,MRAM)DECHUXIAN,KEYISHUOSHICUNCHUJISHUDEYICHANGGEMING,QIFAZHANHEYINGYONGXIANGDANGXUNSU。

                                宏源棋牌BENWENJIUCILUNSHULEYUCIXINGSUIJICUNCHUQI(MRAM)XIANGGUANDECIDIANZUXIAOYINGHEZIXUANDIANZIXUE,JIAOXIANGJINDIZONGSHULEMRAMDEFAZHAN、GONGZUOYUANLI、XINGZHIYUYINGYONG,GONGCANKAOHETAOLUN。

                                新型非挥发性固态磁性随机存储器
                                New No-Volatility Solid Magnetic Random Memory
                                作者:中国西南应用磁学研究所 余声明  (四川绵阳 621000)

                                2.不挥发性磁性随机存储器(MRAM)

                                宏源棋牌CIDIANZUSUIJICUNCHUQI(MRAM)ZAI70NIANDAICHUJIUYOUBAODAO,DANYOUYUAMRCAILIAODEΔR/RoZHIDI,NANYUZHICHENGMRAM。ZIGMRXIAOYINGTEBIESHITMRXIAOYINGFAXIANHOU,MRAMJICHENGWEIXIANSHI。MRAMZUIDADETEDIANSHIFEIHUIFAXING(Non-Volatile)。SUOWEIFEIHUIFAXINGSHIZHIDUANDIANHOUCUNCHUDETUXIANG、SHENGYINHESHUJUBUDIUSHIDETEXING。YINGPANJIUSHILISHIJIAOJIUDEFEIHUIFACUNCHUQI,ERBANDAOTIDONGTAISUIJICUNCHUQI(DRAM)ZESHIHUIFAXINGDEQIJIAN。XINJINKAIFACHUDEFEIHUIFACUNCHUQICHANPINYOU:SHANSUCUNCHUQI(Flash Memory,JIANXIEWEIFlash)、TIEDIANSUIJICUNCHUQI(FRAM)、CIZUSUIJICUNCHUQI(MRAM)JISHUANGXIANGLIANHECUNCHUQI(Ovonic Unified Memory,OUM)。QIZHONGMRAMSHIJIYUDIANZIZIXUANCHANSHENGDEGMRTEBIESHITMRXIAOYINGGONGZUODE,ERYICIXINGJIEGOUZHONGDEZIYOUCENGCIHUAFANGXIANGBUTONGCHANSHENGDECIZUBIANHUALAICUNCHU“0”HE“1”DE,QIDUXIESUDU(10ns)KEYUJINGTAISUIJICUNCHUQI(SRAM)BIMEI,QIEZAICUNCHURONGLIANGSHANGYUDRAMKANGHENG,HAODIANDI,TAJIANGQUDAIDRAM、SRAMDENG,HAIKEYIYUCMOSDEZHIBEIXIANGZHENGHE,BEIITRS(International Technology Roadmap for Semiconductor)LIEWEIZUIXINDEXIAYIDAICUNCHUQICHANPIN,BINGYUJINQINEIKEYONGYUYIDONGCHANPINZHONG(RUSHOUJI、PDA、SHUMAXIANGJIDEFlash),ERZHI2010NIANJIANGQUANMIANQUDAIDRAM。

                                2.1 MRAM的发展

                                SUIZHEIC、LSI、VLSIYIJIGUIZUJIANDEWEIXIAOHUA、JICHENGHUADECHIXUFAZHAN,XIANZAIBANDAOTIZUJIANCHICUNYIJINGJIEJIN0.1WEIMI。RANERZAIYANFANAIMIJIBANDAOTIJISHUSHI,FAXIANZUJIANDEGONGZUOYUANLIYEYOUQIJIXIAN,YINCIKEJIGONGZUOZHEZEZAIXUNQIUXINDECHULU,YUSHIXIANZAIYOUXUDUOYIXINYUANLIWEIJICHUDEXIANGGUANZUJIANYANJIUZAIPENGBODEJINXINGZHE。Magnetoresistance Random Access Memory(MRAM)SHILIYONGYINAIMIJICIXINGJIEGOUTEYOUDEZIXUANXIANGGUANCHUANSHUWEIJICHUDECIDIANZUXIAOYINGSUODEDAODEYIZHONGXINYINGDEFEIHUIFAXINGGUTAICICUNCHUQI,BUNENGBUSHUOSHIQIZHONGZUICHENGGONGDEYILI。SUIZHEZIXUANSUIDAOJIE(Magnetic Tunneling Junction) JIAODADECHUANSUICIDIANZU(TMR)JISHURIJIANCHENGSHU,YANJIURENYUANDUIYUMRAMDEQIDAIYULAIYUDA。

                                宏源棋牌DIANLIUSHIDIANHEZAIZILIUDONGZAOCHENGDE,DANDIANZISHIYOULIANGZHONGZIXUANFANGXIANG,WEIHERICHANGSHENGHUOZHONGSHIYONGDEDIANZIZUJIANZHIGANSHOUDAODIANHEDEBIAOZHENGERMEIYOUZIXUANDEBIAOZHENGNI?ZHUYAOYUANYINSHIZIXUANNENGGOUWEICHIZAIYIDINGFANGXIANGDEXINGJINJULITAIDUAN,YINCIZIXUANZAIJINGGUOZHANGJULIDELUJINGHOU,YOUYUZIXUANBUDUANFANZHUANHOUDEPINGJUNXIAOYING,DAOZHILIANGZHONGZIXUANWUFAFENBIAN。DANYOUYUNAIMIJISHUDECHENGSHU,SHIDERENMENKEQUEBAOZIXUANZAIQIANJINGUOCHENGZHONGWEICHIYIDINGDEFANGXIANG,ZHEILIANGZHONGBUTONGDEDIANHEZAIZIZAIDIANLUZHONGYOUBUTONGDECHUANSHUTEXING,ERQIFENBIEDUICICHANGDEFANYINGYEBUYIYANG,YIBANCHENGWEIZIXUANXIANGGUANCIDIANZU。JINSHINIANLAIFAXIANZIXUANXIANGGUANCIDIANZUFENWEISANLEI: JUCIDIANZU(GMR), CHAOJUCIDIANZU(CMR,)YUCHUANSUICIDIANZU(TMR)。ZHEIXIEZIXUANXIANGGUANCHUANSHUTEXINGYOUQIGONGTONGDETEXING:CIDIANZUBIANHUADA、WUFANGXIANGXINGJIFUCIDIANZUBIANHUAXINGWEI。

                                宏源棋牌DIANZIZIXUANDEZUJIANYANJIU,YOUSHANGSHIJI90NIANDAIZHONGQIZHIJINDUANDUANSHINIANJIAN,YOUJICHUYANJIUKUAISUDEJINRUSHANGPINLIANGCHANKAIFA,QISUDUSHIJINGRENDE。MRAMSHIMUQIANJIJUSHANGYEQIANJINGDEZIXUANDIANZICHANPINZHIYI,YOUYUMRAMJUYOUKANGFUSHEXINGDENENGLI,SHIDEMRAMZAITAIKONGKEJIDEYINGYONGSHANGZHANYOUZHONGYAODEDIWEI。MRAMTONGSHIJUYOUFEIHUIFAXING、DIHAODIANLIANGDETEZHI,SHIFEICHANGSHIHESHIYONGZAIJIANGUHUANBAODEZUIQIANDUANJIQI(LIRUGEZHONGYIDONGXINGJISUANJI、WANGJIWANGLUO、DIANSHI、JIATINGFUWUQI、YIDONGDIANHUA、SHUZIXIANGJIDENG)SHANG。CIWAI,ZAIGAOLINGSHEHUIJIANCHENGZHULIUDETONGSHI,WEILAIDUIKEXIEDAIXINGYIXUEDIANZICHANPINDEXUQIUYIDINGHUIYURIJUZENG,MRAMBIDINGBEISHOUZHUMU。MRAMJUYOUDEJIWEIYOUYUEDEWENDUTEXING,YIBEIQIDAIKEYUNYONGYUGEZHONGJIXIANWENDUZHONGSUOSHIYONGDEJIQIZHINEICUNSHANG。YOUYUMRAMWEILAIDESHICHANGQIANLIWUQIONG,YINCIQUANQIUGEDASUIJICUNQUNEICUNGONGSIJUNZAIJIJIKAIFA。TU1WEIQUANQIUMRAMDEJISHUFAZHANJINCHENGSHIYITU。KEJIAN,CONG1996-2004NIANJIANQIJISHUFAZHANSHIXIANGDANGKUAIDE。

                                什么是MRAM(不挥发性磁性随机存储器)及MRAM原理、应用比较

                                2.2 GMR和TMR的基本结构:

                                宏源棋牌YOUYUYIXINGCIDIANZUXIAOYINGDEMRZHIBIJIAOXIAO,QIYINGYONGXUQIUBEISHOUXIANZHI。ZHIHOU,YOUYUFAXIANLEJUCIDIANZUXIAOYINGCAILIAO(GMR), MRAMDEKAIFACAIYOUYOULEXINDEJINZHAN。MUQIANTMRYANFADESHUNLIGENGSHIDEMRAMDEXIANGGUANYANFAYUELAIYUEPENGBO。

                                什么是MRAM(不挥发性磁性随机存储器)及MRAM原理、应用比较

                                GMRYUTMRDEJIBENJIEGOUTU

                                LIANGZHEJIEWEISANCENGGOUZAO,YOULIANGCENGCIXINGCENG,ERZAIZHEILIANGCENGCIXINGCENGJIANZECUNZAIZHEYICENGHOUDUWEINAIMIJIDEFEICIXINGZHONGJIANCENG(spacer),QIZHONGGMRDEFEICIXINGCENGSHIYOUTONGDENGJINSHUSUOGOUCHENG,ERTMRBUFENZECAIYONGAl2O3DENGJUEYUANTI。QIANZHEJIEMIANCHUDECHUANDAODIANZIHUICHENGXIANMANYOUXIANXIANG,YOUYUCHUANSHUDIANZIZHIJIHUATEXING,YIBANSHUOLAI,DANGSHANGXIALIANGCENGCIXINGCENGDECIHUAXIANXIANGHUWEIPINGXINGSHIDEDIANZUHUIJIAOFANPINGXINGSHILAIDEXIAO。ERHOUZHEYEYINWEIHUIYINQIZIXUANJIHUADIANZIDECHUANSUILVGAIBIAN,DANGSHANGXIALIANGCENGCIXINGCENGDECIHUAXIANXIANGHUWEIPINGXINGSHIDEDIANZUHUIJIAOFANPINGXINGSHILAIDEXIAO。

                                2.3 GMR型MRAM的工作原理

                                宏源棋牌    TU3SHISV MRAMJIEGOUYUANLI,TUZHONGSHIYIZHONGJIYUGMR SV DEMRAMFANGAN。

                                什么是MRAM(不挥发性磁性随机存储器)及MRAM原理、应用比较

                                TU4SHISV MRAMGONGZUOYUANLI、XINHAO(Vs)DEBOXING。

                                什么是MRAM(不挥发性磁性随机存储器)及MRAM原理、应用比较

                                宏源棋牌ZAITU3ZHONG,FANTIECICENGHEDINGZHACENGYONGZUOJILU“1”HE“0”,DANGZIXIANDIANLIU(Iw)FANGXIANGWEIZHENGSHI(DIANLIUFANGXIANGYOULIXIANGWAI),QIDIANLIUDAXIAOSHIDAOXIANZHOUWEIXINGCHENGDEYUANCICHANGCHAOGUOFANTIECICENGDEJIAOWANLISHI,CHENGWEIJILU“0”,FANZHI,DANGZIXIANDIANLIUWEIFU(DIANLIUFANGXIANGYOUWAIXIANGLI),SHIFANTIECICENGDECIHUAFANGXIANGXIANGFAN,CHENGWEIJILU“1。”DUCHUSHI,ZAIZIXIANZHONGTONGYIZHENG、FUJIXINGDE、NENGSHIZIYOUCENGGAIBIANFANGXIANGDEDUCHUDIANLIU(IS)。DANGDU“0”SHI,ZIYOUCENGHEDINGZHACENGZIXUANZHIJIANYOUFANPINGXINGDAOPINGXING,CIDIANZUYOUDABIANXIAO,DUCHUXINXI(VS)WEIFU;DANGDU“1”SHI,CIDIANZUYOUXIAOBIANDA,VSWEIZHENG。ZHEIGEGUOCHENGKEYISHIBUPOHUAIDE,ZAIJINXINGLE3YICIDUCHUHOU,XINHAOBUHUIFASHENGRENHEBIANHUA。 MRAMHEBANDAOTIRAMXIANGBIQIZUIDATEDIANSHIFEIHUIFAXING(FEIYISHI)、KANGFUSHE、ZHANGSHOUMING、DICHENGBEN。YOUYUGMRCAILIAODESHIYONG,MEIWEICHICUNDEJIANXIAOBINGBUYINGXIANGDUCHUXINHAOLINGMINDU,KEYIHUODEZUIDADECUNCHUMIDU,JIEGOUJIANDAN,ZHIZUOGONGYIYEDEYIJIANHUA(BIAO1)。

                                什么是MRAM(不挥发性磁性随机存储器)及MRAM原理、应用比较

                                随着TMR研究的进展,MRAM将获得更好的性能。因此说,MRAM的采用将是计算机内存芯片的一场革命。特别是它的非易失、抗辐射性能,在军事应用中也将发挥重大作用。

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