摘要:
A process for achieving tighter reader and writer track width control is disclosed. The write gap layer is used as the plating seed on which the upper pole is electro-formed. This allows the write gap layer to then be deposited through a precisely controllable process such as sputtering. Since less material needs to be removed during pole trimming, a thinner layer of photoresist may be used, resulting in improved dimensional control.
摘要:
A magnetic layer that may serve as a top pole layer and bottom pole layer in a magnetic write head is disclosed. The magnetic layer has a composition represented by FeWCoXNiYVZ in which w, x, y, and z are the atomic % of Fe, Co, Ni, and V, respectively, and where w is between about 60 and 85, x is between about 10 and 30, y is between 0 and about 20, z is between about 0.1 and 3, and wherein w+x+y+z=100. An electroplating process having a plating current density of 3 to 30 mA/cm2 is used to deposit the magnetic layer and involves an electrolyte solution with a small amount of VOSO4 which is the V source. The resulting magnetic layer has a magnetic saturation flux density BS greater than 1.9 Telsa and a resistivity ρ higher than 70 μohms-cm.
摘要翻译:公开了可以用作磁写头中的顶极层和底极层的磁性层。 磁性层具有由FeWCoXNiYVZ表示的组成,其中w,x,y和z分别是Fe,Co,Ni和V的原子%,其中w在约60和85之间,x在约10 30,y在0和约20之间,z在约0.1和3之间,并且其中w + x + y + z = 100。 使用电镀电流密度为3〜30mA / cm 2的电镀工艺来沉积磁性层,并且涉及具有少量作为V源的VOSO4的电解质溶液。 得到的磁性层具有大于1.9Telsa的磁饱和磁通密度BS和高于70μΩ·cm的电阻率rho。
摘要:
Connecting a preamplifier to a printed circuit board assembly on a hard disk drive. The disk includes a housing, a head stack assembly coupled with the housing, a printed circuit board assembly comprising via holes, a preamplifier coupled with the head stack assembly, and at least one deformable pogo pin configured to mechanically and communicatively connect the printed circuit board assembly to the preamplifier upon insertion into the via holes, further configured to comprise a tip and a shaft, and further configured to deform upon insertion into the via holes.
摘要:
For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using the write gap layer as the plating seed on which the upper pole was electro-formed so that the width of the GMR pedestal serves to define the device's write track width.
摘要:
A magnetic layer that may serve as a top pole layer and bottom pole layer in a magnetic write head is disclosed. The magnetic layer has a composition represented by FeWCoXNiYVZ in which w, x, y, and z are the atomic % of Fe, Co, Ni, and V, respectively, and where w is between about 60 and 85, x is between about 10 and 30, y is between 0 and about 20, z is between about 0.1 and 3, and wherein w+x+y+z=100. An electroplating process having a plating current density of 3 to 30 mA/cm2 is used to deposit the magnetic layer and involves an electrolyte solution with a small amount of VOSO4 which is the V source. The resulting magnetic layer has a magnetic saturation flux density BS greater than 1.9 Telsa and a resistivity ρ higher than 70 μohms-cm.
摘要翻译:公开了可以用作磁写头中的顶极层和底极层的磁性层。 磁性层具有由FeWCoXNiYVZ表示的组成,其中w,x,y和z分别是Fe,Co,Ni和V的原子%,其中w在约60和85之间,x在约10 30,y在0和约20之间,z在约0.1和3之间,并且其中w + x + y + z = 100。 使用电镀电流密度为3〜30mA / cm 2的电镀工艺来沉积磁性层,并且涉及具有少量作为V源的VOSO4的电解质溶液。 所得到的磁性层具有大于1.9Telsa的磁饱和磁通密度BS和电阻率rgr。 高于70μohms-cm。
摘要:
For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using a plated NiPd write gap which is self-aligned with a plated 23 KG pole material. Heat dissipation by the writer is thus improved since alumina has been replaced with nonmagnetic metal materials, such as Ru, leading to less pole tip protrusion which in turn leads to better writer track width control
摘要:
For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using a plated NiPd write gap which is self-aligned with a plated 23 KG pole material. Heat dissipation by the writer is thus improved since alumina has been replaced with nonmagnetic metal materials, such as Ru, leading to less pole tip protrusion which in turn leads to better writer track width control
摘要:
A process is described for the fabrication, through electrodeposition, of FexCoyNiz (x=60-71, y=25-35, z=0-5) films that have, in their as-deposited form, a saturation magnetization of at least 24 kG and a coercivity of less than 0.3 Oe. A key feature is the addition of aryl sulfinates to the plating bath along with a suitable seed layer.
摘要:
Connecting a preamplifier to a printed circuit board assembly on a hard disk drive. The disk includes a housing, a head stack assembly coupled with the housing, a printed circuit board assembly comprising via holes, a preamplifier coupled with the head stack assembly, and at least one deformable pogo pin configured to mechanically and communicatively connect the printed circuit board assembly to the preamplifier upon insertion into the via holes, further configured to comprise a tip and a shaft, and further configured to deform upon insertion into the via holes.
摘要:
A process is described for the fabrication, through electrodeposition, of FexCoyNiz (x=60-71, y=25-35, z=0-5) films that have, in their as-deposited form, a saturation magnetization of at least 24 kG and a coercivity of less than 0.3 Oe. A key feature is the addition of aryl sulfinates to the plating bath along with a suitable seed layer.
摘要翻译:描述了通过电沉积制造Fe x Sb x Ni x Z x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(x = 35,z = 0-5)具有其沉积形式的至少24kG的饱和磁化强度和小于0.3Oe的矫顽力的膜。 一个关键的特征是在适当的种子层的同时向镀浴中加入芳基亚硫酸盐。