摘要:
A method is provided for forming a metal/semiconductor/metal (MSM) current limiter and resistance memory cell with an MSM current limiter. The method includes the steps of: providing a substrate; forming an MSM bottom electrode overlying the substrate; forming a ZnOx semiconductor layer overlying the MSM bottom electrode, where x is in the range between about 1 and about 2, inclusive; and, forming an MSM top electrode overlying the semiconductor layer, The ZnOx semiconductor can be formed through a number of different processes such as spin-coating, direct current (DC) sputtering, radio frequency (RF) sputtering, metalorganic chemical vapor deposition (MOCVD), or atomic layer deposition (ALD).
摘要:
A method is provided for forming a buffered-layer memory cell. The method comprises: forming a bottom electrode; forming a colossal magnetoresistance (CMR) memory film overlying the bottom electrode; forming a memory-stable semiconductor buffer layer, typically a metal oxide, overlying the memory film; and, forming a top electrode overlying the semiconductor buffer layer. In some aspects of the method the semiconductor buffer layer is formed from YBa2Cu3O7−X (YBCO), indium oxide (In2O3), or ruthenium oxide (RuO2), having a thickness in the range of 10 to 200 nanometers (nm). The top and bottom electrodes may be TiN/Ti, Pt/TiN/Ti, In/TiN/Ti, PtRhOx compounds, or PtIrOx compounds. The CMR memory film may be a Pr1−XCaXMnO3 (PCMO) memory film, where x is in the region between 0.1 and 0.6, with a thickness in the range of 10 to 200 nm.
摘要翻译:提供了一种用于形成缓冲层存储单元的方法。 该方法包括:形成底部电极; 形成覆盖底部电极的巨大磁阻(CMR)记忆膜; 形成存储器稳定的半导体缓冲层,通常为覆盖存储膜的金属氧化物; 并且形成覆盖半导体缓冲层的顶部电极。 在该方法的一些方面,半导体缓冲层由YBa 2 N 3 O 7-X(YBCO),氧化铟(In 2或2 O 3)或氧化钌(RuO 2 N 2),其厚度在10-200纳米(nm)的范围内。 顶部和底部电极可以是TiN / Ti,Pt / TiN / Ti,In / TiN / Ti,PtRhOx化合物或PtIrOx化合物。 CMR存储器膜可以是Pr 1-X C x MnO 3(PCMO)存储膜,其中x在0.1之间的区域 和0.6,厚度在10至200nm的范围内。
摘要:
A method of fabricating a nano-scale resistance cross-point memory array includes preparing a silicon substrate; depositing silicon oxide on the substrate to a predetermined thickness; forming a nano-scale trench in the silicon oxide; depositing a first connection line in the trench; depositing a memory resistor layer in the trench on the first connection line; depositing a second connection line in the trench on the memory resistor layer; and completing the memory array. A cross-point memory array includes a silicon substrate; a first connection line formed on the substrate; a colossal magnetoresistive layer formed on the first connection line; a silicon nitride layer formed on a portion of the colossal magnetoresistive layer; and a second connection line formed adjacent the silicon nitride layer and on the colossal magnetoresistive layer.
摘要:
A Pr1-XCaXMnO3 (PCMO) spin-coat deposition method for eliminating voids is provided, along with a void-free PCMO film structure. The method comprises: forming a substrate, including a noble metal, with a surface; forming a feature, such as a via or trench, normal with respect to the substrate surface; spin-coating the substrate with acetic acid; spin-coating the substrate with a first, low concentration of PCMO solution; spin-coating the substrate with a second concentration of PCMO solution, having a greater concentration of PCMO than the first concentration; baking and RTA annealing (repeated one to five times); post-annealing; and, forming a PCMO film with a void-free interface between the PCMO film and the underlying substrate surface. The first concentration of PCMO solution has a PCMO concentration in the range of 0.01 to 0.1 moles (M). The second concentration of PCMO solution has a PCMO concentration in the range of 0.2 to 0.5 M.
摘要翻译:提供了一种用于消除空隙的Pr 1-X C 3 Mn 3 O 3(PCMO)旋涂沉积方法,以及无空隙 PCMO薄膜结构。 该方法包括:用表面形成包括贵金属的基底; 形成相对于衬底表面正常的特征,例如通孔或沟槽; 用乙酸旋涂底物; 用第一种低浓度的PCMO溶液旋涂底物; 以第二浓度的PCMO溶液旋涂底物,其具有比第一浓度更高浓度的PCMO; 烘烤和RTA退火(重复1〜5次); 后退火; 并且在PCMO膜和下面的衬底表面之间形成具有无空隙界面的PCMO膜。 PCMO溶液的第一浓度的PCMO浓度范围为0.01至0.1摩尔(M)。 PCMO溶液的第二浓度的PCMO浓度范围为0.2-0.5M。
摘要:
PrCaMnO (PCMO) thin films with predetermined memory-resistance characteristics and associated formation processes have been provided. In one aspect the method comprises: forming a Pr3+1−xCa2+xMnO thin film composition, where 0.1
摘要翻译:已经提供了具有预定的记忆电阻特性和相关的形成过程的PrCaMnO(PCMO)薄膜。 在一个方面,所述方法包括:形成Pr 3+ 1-x 2 Ca 2 O 3 x MnO薄膜 组成,其中0.1 0.78Mn4+</SUP>0.22O2-2.96 SUB>组合, Mn和O离子的比例变化如下:O 2 - (2.96); Mn(3+)+((1-x)+ 8%); 和Mn 4+(x-8%)。 在另一方面,该方法响应于晶体取向在PCMO膜中产生密度。 例如,如果PCMO膜具有(110)取向,则在垂直于(110)取向的平面中产生在每平方英尺5至6.76个Mn原子的范围内的密度。
摘要:
A method of applying a PCMO thin film on an iridium substrate for use in a RRAM device, includes preparing a substrate; depositing a barrier layer on the substrate; depositing a layer of iridium on the barrier layer; spin coating a layer of PCMO on the iridium; baking the PCMO and substrate in a three-step baking process; post-bake annealing the substrate and the PCMO in a RTP chamber; repeating said spin coating, baking and annealing steps until the PCMO has a desired thickness; annealing the substrate and PCMO; depositing a top electrode; and completing the RRAM device.
摘要:
A method of preparing a hafnium nitrate thin film includes placing phosphorus pentoxide in a first vessel; connecting the first vessel to a second vessel containing hafnium tetrachloride; cooling the second vessel with liquid nitrogen; dropping fuming nitric acid into the first vessel producing N2O5 gas; allowing the N2O5 gas to enter the second vessel; heating the first vessel until the reaction is substantially complete; disconnecting the two vessels; removing the second vessel from the liquid nitrogen bath; heating the second vessel; refluxing the contents of the second vessel; drying the compound in the second vessel by dynamic pumping; purifying the compound in the second vessel by sublimation to form Hf(NO3)4, and heating the Hf(NO3)4 to produce HfO2 for use in an ALCVD process.
摘要翻译:制备硝酸铪薄膜的方法包括将五氧化二磷放置在第一容器中; 将第一容器连接到含有四氯化铪的第二容器; 用液氮冷却第二个容器; 将发烟硝酸滴入产生N 2 O 5气体的第一容器中; 允许N 2 O 5气体进入第二容器; 加热第一个容器直到反应基本完成; 断开两艘船舶; 从液氮浴中除去第二容器; 加热第二艘船; 回流第二容器的内容物; 通过动态泵送干燥第二容器中的化合物; 通过升华纯化第二容器中的化合物以形成Hf(NO 3 N 3)4,并加热Hf(NO 3 N 3)3 4生产用于ALCVD工艺的HfO 2 2。
摘要:
A method for forming a doped PGO ferroelectric thin film, and related doped PGO thin film structures are described. The method comprising: forming either an electrically conductive or electrically insulating substrate; forming a doped PGO film overlying the substrate; annealing; crystallizing; and, forming a single-phase c-axis doped PGO thin film overlying the substrate, having a Curie temperature of greater than 200 degrees C. Forming a doped PGO film overlying the substrate includes depositing a doped precursor in the range between 0.1N and 0.5N, with a molecular formula of Pby-xMxGe3O11, where: M is a doping element; y=4.5 to 6; and, x=0.1 to 1. The element M can be Sn, Ba, Sr, Cd, Ca, Pr, Ho, La, Sb, Zr, or Sm.
摘要翻译:描述了用于形成掺杂的PGO铁电薄膜的方法以及相关的掺杂PGO薄膜结构。 该方法包括:形成导电或电绝缘的衬底; 在衬底上形成掺杂的PGO膜; 退火; 结晶 并且形成覆盖在衬底上的单相c轴掺杂的PGO薄膜,其居里温度大于200℃。形成覆盖在衬底上的掺杂PGO膜包括沉积在0.1N和0.5之间的掺杂前体 N,具有分子式为Pb x Si x N x N x O 11,其中:M是掺杂物 元件; y = 4.5〜6; x = 0.1〜1。元素M可以是Sn,Ba,Sr,Cd,Ca,Pr,Ho,La,Sb,Zr或Sm。
摘要:
An MOCVD process is provided for forming metal-containing films having the general formula M′xM″(1−x)MyOz, wherein M′ is a metal selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Y, Sc, Yb, Lu, and Gd; M″ is a metal selected from the group consisting of Mg, Ca, Sr, Ba, Pb, Zn, and Cd; M is a metal selected from the group consisting of Mn, Ce, V, Fe, Co, Nb, Ta, Cr, Mo, W, Zr, Hf and Ni; x has a value from 0 to 1; y has a value of 0, 1 or 2; and z has an integer value of 1 through 7. The MOCVD process uses precursors selected from alkoxide precursors, β-diketonate precursors, and metal carbonyl precursors in combination to produce metal-containing films, including resistive memory materials.
摘要:
Low cross talk resistive cross point memory devices are provided, along with methods of manufacture and use. The memory device comprises a bit formed using a perovskite material interposed at a cross point of an upper electrode and lower electrode. Each bit has a resistivity that can change through a range of values in response to application of one, or more, voltage pulses. Voltage pulses may be used to increase the resistivity of the bit, decrease the resistivity of the bit, or determine the resistivity of the bit. Memory circuits are provided to aid in the programming and read out of the bit region.