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 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 RRAM memory cell is formed on a silicon substrate having a operative junction therein and a metal plug formed thereon, includes a first oxidation resistive layer; a first refractory metal layer; a CMR layer; a second refractory metal layer; and a second oxidation resistive layer. A method of fabricating a multi-layer electrode RRAM memory cell includes preparing a silicon substrate; forming a junction in the substrate taken from the group of junctions consisting of N+ junctions and P+ junctions; depositing a metal plug on the junction; depositing a first oxidation resistant layer on the metal plug; depositing a first refractory metal layer on the first oxidation resistant layer; depositing a CMR layer on the first refractory metal layer; depositing a second refractory metal layer on the CMR layer; depositing a second oxidation resistant layer on the second refractory metal layer; and completing the RRAM memory cell.
摘要:
A method is provided for forming a Pr0.3Ca0.7MnO3 (PCMO) thin film with crystalline structure-related memory resistance properties. The method comprises: forming a PCMO thin film with a first crystalline structure; and, changing the resistance state of the PCMO film using pulse polarities responsive to the first crystalline structure. In one aspect the first crystalline structure is either amorphous or a weak-crystalline. Then, the resistance state of the PCMO film is changed in response to unipolar pulses. In another aspect, the PCMO thin film has either a polycrystalline structure. Then, the resistance state of the PCMO film changes in response to bipolar pulses.
摘要:
A polycrystalline memory structure is described for improving reliability and yield of devices employing polycrystalline memory materials comprising a polycrystalline memory layer, which has crystal grain boundaries forming gaps between adjacent crystallites overlying a substrate. An insulating material is located at least partially within the gaps to at least partially block the entrance to the gaps. A method of forming a polycrystalline memory structure is also described. A layer of material is deposited and annealed to form a polycrystalline memory material having gaps between adjacent crystallites. An insulating material is deposited over the polycrystalline memory material to at least partially fill the gaps, thereby blocking a portion of each gap.
摘要:
A polycrystalline memory structure is described for improving reliability and yield of devices employing polycrystalline memory materials comprising a polycrystalline memory layer, which has crystal grain boundaries forming gaps between adjacent crystallites overlying a substrate. An insulating material is located at least partially within the gaps to at least partially block the entrance to the gaps. A method of forming a polycrystalline memory structure is also described. A layer of material is deposited and annealed to form a polycrystalline memory material having gaps between adjacent crystallites. An insulating material is deposited over the polycrystalline memory material to at least partially fill the gaps, thereby blocking a portion of each gap.
摘要:
A method of cleaning a metal oxide thin film on a silicon wafer, includes dipping the wafer in an organic solvent; drying the wafer in a nitrogen atmosphere; and stripping any photoresist from the wafer in an oxygen atmosphere under partial vacuum at a temperature of about 200° C. The wafer may also be cleaned by dipping in a polar organic solvent and subjecting the wafer to ultrasound while immersed in the solvent.
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 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 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.