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公开(公告)号:US08416619B2
公开(公告)日:2013-04-09
申请号:US13089538
申请日:2011-04-19
申请人: Yuankai Zheng , Haiwen Xi , Dimitar V. Dimitrov , Dexin Wang
发明人: Yuankai Zheng , Haiwen Xi , Dimitar V. Dimitrov , Dexin Wang
IPC分类号: G11C11/14
CPC分类号: H01L43/02 , B82Y25/00 , G11C11/16 , G11C11/1675 , H01F10/3254 , H01F10/3268 , H01L27/228 , H01L43/08 , H01L43/10
摘要: A magnetic memory unit includes a tunneling barrier separating a free magnetic element and a reference magnetic element. A first phonon glass electron crystal layer is disposed on a side opposing the tunneling barrier of either the free magnetic element or the reference magnetic element. A second phonon glass electron crystal layer also be disposed on a side opposing the tunneling barrier of either the free magnetic element or the reference magnetic element to provide a Peltier effect on the free magnetic element and the reference magnetic element.
摘要翻译: 磁存储器单元包括分隔自由磁性元件和参考磁性元件的隧道势垒。 第一声子玻璃电子晶体层设置在与自由磁性元件或参考磁性元件的隧道势垒相对的一侧。 第二声子玻璃电子晶体层也设置在与自由磁性元件或参考磁性元件的隧道势垒相对的一侧上,以在自由磁性元件和参考磁性元件上提供珀尔帖效应。
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公开(公告)号:US08289758B2
公开(公告)日:2012-10-16
申请号:US12943979
申请日:2010-11-11
申请人: Yuankai Zheng , Dimitar V. Dimitrov , Wei Tian , Dexin Wang , Zheng Gao , Xiaobin Wang
发明人: Yuankai Zheng , Dimitar V. Dimitrov , Wei Tian , Dexin Wang , Zheng Gao , Xiaobin Wang
IPC分类号: G11C11/16
CPC分类号: G11C11/161
摘要: Magnetic tunnel junctions having a specular insulative spacer are disclosed. The magnetic tunnel junction includes a free magnetic layer, a reference magnetic layer, an electrically insulating and non-magnetic tunneling barrier layer separating the free magnetic layer from the reference magnetic layer, and an electrically insulating and electronically reflective layer positioned to reflect at least a portion of electrons back into the free magnetic layer.
摘要翻译: 公开了具有镜面绝缘间隔物的磁隧道结。 磁性隧道结包括自由磁性层,参考磁性层,将自由磁性层与参考磁性层分离的电绝缘和非磁性隧道势垒层,以及电绝缘和电子反射层,其被定位成反射至少一个 部分电子返回自由磁性层。
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公开(公告)号:US20110242883A1
公开(公告)日:2011-10-06
申请号:US13160969
申请日:2011-06-15
申请人: Yuankai Zheng , Dimitar V. Dimitrov , Haiwen Xi
发明人: Yuankai Zheng , Dimitar V. Dimitrov , Haiwen Xi
IPC分类号: G11C11/15
CPC分类号: G11C11/15 , G11C11/1675 , G11C11/5607
摘要: Methods of writing to a multi-bit MRAM memory unit are described. The method includes to self-detected writing to a multi-bit (i.e., multilevel) thermally assisted MRAM. The self-detected writing increases a reading margin between data state levels and decreases reading margin variability due to cell resistance variation.
摘要翻译: 描述写入多位MRAM存储器单元的方法。 该方法包括对多位(即多级)热辅助MRAM进行自检测写入。 自检的写入会增加数据状态级之间的读取余量,并降低由于单元格电阻变化而导致的读取边缘变化。
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公开(公告)号:US07876604B2
公开(公告)日:2011-01-25
申请号:US12390006
申请日:2009-02-20
申请人: Yuankai Zheng , Yiran Chen , Xiaobin Wang , Zheng Gao , Dimitar V. Dimitrov , Wenzhong Zhu , Yong Lu
发明人: Yuankai Zheng , Yiran Chen , Xiaobin Wang , Zheng Gao , Dimitar V. Dimitrov , Wenzhong Zhu , Yong Lu
CPC分类号: G11C11/1673
摘要: Self-reference reading a magnetic tunnel junction data cell methods are disclosed. An illustrative method includes applying a read voltage across a magnetic tunnel junction data cell and forming a read current. The magnetic tunnel junction data cell has a first resistance state. The read voltage is sufficient to switch the magnetic tunnel junction data cell resistance. The method includes detecting the read current and determining if the read current remains constant during the applying step. If the read current remains constant during the applying step, then the first resistance state of the magnetic tunnel junction data cell is the resistance state that the read voltage was sufficient to switch the magnetic tunnel junction data cell to.
摘要翻译: 公开了自参考读取磁隧道结数据单元方法。 一种说明性方法包括在磁性隧道结数据单元上施加读取电压并形成读取电流。 磁性隧道结数据单元具有第一电阻状态。 读取电压足以切换磁性隧道结数据单元电阻。 该方法包括检测读取电流并确定在施加步骤期间读取电流是否保持恒定。 如果在施加步骤期间读取电流保持恒定,则磁性隧道结数据单元的第一电阻状态是读取电压足以将磁性隧道结数据单元切换到的电阻状态。
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公开(公告)号:US20100128520A1
公开(公告)日:2010-05-27
申请号:US12502213
申请日:2009-07-13
申请人: Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Haiwen Xi , Xiaobin Wang , Wei Tian , Xiaohua Lou
发明人: Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Haiwen Xi , Xiaobin Wang , Wei Tian , Xiaohua Lou
IPC分类号: G11C11/14
CPC分类号: G11C11/161
摘要: An apparatus that includes a magnetic structure including a reference layer; and a free layer; an exchange coupling spacer layer; and a stabilizing layer, wherein the exchange coupling spacer layer is between the magnetic structure and the stabilizing layer and exchange couples the free layer of the magnetic structure to the stabilizing layer.
摘要翻译: 一种包括具有参考层的磁性结构的装置; 和自由层; 交换耦合间隔层; 和稳定层,其中所述交换耦合间隔层位于所述磁性结构和所述稳定层之间并且将所述磁性结构的自由层与所述稳定层交换。
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公开(公告)号:US20100110784A1
公开(公告)日:2010-05-06
申请号:US12390006
申请日:2009-02-20
申请人: Yuankai Zheng , Yiran Chen , Xiaobin Wang , Zheng Gao , Dimitar V. Dimitrov , Wenzhong Zhu , Yong Lu
发明人: Yuankai Zheng , Yiran Chen , Xiaobin Wang , Zheng Gao , Dimitar V. Dimitrov , Wenzhong Zhu , Yong Lu
IPC分类号: G11C11/14 , G11C11/416
CPC分类号: G11C11/1673
摘要: Self-reference reading a magnetic tunnel junction data cell methods are disclosed. An illustrative method includes applying a read voltage across a magnetic tunnel junction data cell and forming a read current. The magnetic tunnel junction data cell has a first resistance state. The read voltage is sufficient to switch the magnetic tunnel junction data cell resistance. The method includes detecting the read current and determining if the read current remains constant during the applying step. If the read current remains constant during the applying step, then the first resistance state of the magnetic tunnel junction data cell is the resistance state that the read voltage was sufficient to switch the magnetic tunnel junction data cell to.
摘要翻译: 公开了自参考读取磁隧道结数据单元方法。 一种说明性方法包括在磁性隧道结数据单元上施加读取电压并形成读取电流。 磁性隧道结数据单元具有第一电阻状态。 读取电压足以切换磁性隧道结数据单元电阻。 该方法包括检测读取电流并确定在施加步骤期间读取电流是否保持恒定。 如果在施加步骤期间读取电流保持恒定,则磁性隧道结数据单元的第一电阻状态是读取电压足以将磁性隧道结数据单元切换到的电阻状态。
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公开(公告)号:US08462543B2
公开(公告)日:2013-06-11
申请号:US13474838
申请日:2012-05-18
申请人: Yuankai Zheng , Dimitar V. Dimitrov , Haiwen Xi
发明人: Yuankai Zheng , Dimitar V. Dimitrov , Haiwen Xi
IPC分类号: G11C11/02
CPC分类号: G11C11/15 , G11C11/1675 , G11C11/5607
摘要: Methods of writing to a multi-bit MRAM memory unit are described. The method includes to self-detected writing to a multi-bit (i.e., multilevel) thermally assisted MRAM. The self-detected writing increases a reading margin between data state levels and decreases reading margin variability due to cell resistance variation.
摘要翻译: 描述写入多位MRAM存储器单元的方法。 该方法包括对多位(即多级)热辅助MRAM进行自检测写入。 自检的写入会增加数据状态级之间的读取余量,并降低由于单元格电阻变化而导致的读取边缘变化。
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公开(公告)号:US08199564B2
公开(公告)日:2012-06-12
申请号:US13160969
申请日:2011-06-15
申请人: Yuankai Zheng , Dimitar V. Dimitrov , Haiwen Xi
发明人: Yuankai Zheng , Dimitar V. Dimitrov , Haiwen Xi
IPC分类号: G11C11/02
CPC分类号: G11C11/15 , G11C11/1675 , G11C11/5607
摘要: Methods of writing to a multi-bit MRAM memory unit are described. The method includes to self-detected writing to a multi-bit (i.e., multilevel) thermally assisted MRAM. The self-detected writing increases a reading margin between data state levels and decreases reading margin variability due to cell resistance variation.
摘要翻译: 描述写入多位MRAM存储器单元的方法。 该方法包括对多位(即多级)热辅助MRAM进行自检测写入。 自检的写入会增加数据状态级之间的读取余量,并降低由于单元格电阻变化而导致的读取边缘变化。
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公开(公告)号:US08194444B2
公开(公告)日:2012-06-05
申请号:US12968441
申请日:2010-12-15
申请人: Yuankai Zheng , Yiran Chen , Xiaobin Wang , Zheng Gao , Dimitar V. Dimitrov , Wenzhong Zhu , Yong Lu
发明人: Yuankai Zheng , Yiran Chen , Xiaobin Wang , Zheng Gao , Dimitar V. Dimitrov , Wenzhong Zhu , Yong Lu
CPC分类号: G11C11/1673
摘要: Self-reference reading a magnetic tunnel junction data cell methods are disclosed. An illustrative method includes applying a read voltage across a magnetic tunnel junction data cell and forming a read current. The magnetic tunnel junction data cell has a first resistance state. The read voltage is sufficient to switch the magnetic tunnel junction data cell resistance. The method includes detecting the read current and determining if the read current remains constant during the applying step. If the read current remains constant during the applying step, then the first resistance state of the magnetic tunnel junction data cell is the resistance state that the read voltage was sufficient to switch the magnetic tunnel junction data cell to.
摘要翻译: 公开了自参考读取磁隧道结数据单元方法。 一种说明性方法包括在磁性隧道结数据单元上施加读取电压并形成读取电流。 磁性隧道结数据单元具有第一电阻状态。 读取电压足以切换磁性隧道结数据单元电阻。 该方法包括检测读取电流并确定在施加步骤期间读取电流是否保持恒定。 如果在施加步骤期间读取电流保持恒定,则磁性隧道结数据单元的第一电阻状态是读取电压足以将磁性隧道结数据单元切换到的电阻状态。
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公开(公告)号:US20110298068A1
公开(公告)日:2011-12-08
申请号:US13210436
申请日:2011-08-16
申请人: Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Wei Tian , Xiaobin Wang , Xiaohua Lou
发明人: Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Wei Tian , Xiaobin Wang , Xiaohua Lou
IPC分类号: H01L29/82
CPC分类号: G11C11/161
摘要: A magnetic tunnel junction having a compsensation element is disclosed. The magnetic tunnel junction includes a reference element, and a compensation element having an opposite magnetization moment to a magnetization moment of the reference element. A free magnetic layer is between the reference element and the compensation element, and an electrically insulating and non-magnetic tunneling barrier layer separates the free magnetic layer from the reference element. The free magnetic layer includes Co100-X-YFeXBY wherein X is a value being greater than 30 and Y is a value being greater than 15.
摘要翻译: 公开了一种具有补偿元件的磁性隧道结。 磁性隧道结包括参考元件和补偿元件,该补偿元件具有与参考元件的磁化矩相反的磁化力矩。 自由磁性层在参考元件和补偿元件之间,并且电绝缘和非磁性隧道势垒层将自由磁性层与参考元件分开。 自由磁性层包括Co100-X-YFeXBY,其中X是大于30的值,Y是大于15的值。
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